Usage:
Remove Track Motors
1. Lift the machine approximately 30.5 cm (1 ft.), and install supports under the track.
2. Remove the front guard from under the hydrostatic power control unit and the rear guard from under the engine. Weight of the front guard is: 943 or 953 - 78 kg (172 lb.). Weight of the rear guard is: 943 - 66 kg (146 lb.), 953 - 75 kg (166 lb.).
3. Remove plug (1), and install a 1 in. pipe nipple in the oil pan, and drain the oil out of the hydrostatic power control unit. Capacity is approximately: 943 - 26.5 liter (7 U.S. gal.), 953 - 57 liter (15 U.S. gal.).
NOTE: The removal of the right track motor is shown. If only the left track motor is removed and the machine does not have a ripper, it will not be necessary to drain the hydraulic tank, or remove the implement pump lines.
Typical Example
4. To drain the hydraulic tank, remove plug (3), and install a 1/2 in. pipe nipple with a hose installed on it. Loosen valve (2), and drain the hydraulic tank. Capacity is approximately 100 liter (26.4 U.S. gal.).
| NOTICE |
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Be sure to clean all fittings and oil line connections before lines are disconnected. Install plugs in all openings to keep dirt out of the oil lines and track motors. |
5. Remove clip (4) that holds the oil tube to the frame. Loosen the hose clamp, and disconnect implement pump suction line (5) from the oil tube.
6. Remove clips (6) that hold the oil tube to the frame. Loosen the hose clamp, and disconnect the suction line from tube (7). Remove tube (7).
7. Remove clips (8) that hold the implement pump outlet line to the frame. Disconnect implement pump outlet line (9) from the pump, and move it clear of the track motor.
8. Disconnect case drain line (10) from the track motor.
9. Remove clip (11) that holds the hydraulic oil cooler lines to the left track motor, and use a piece of wire to hold the oil cooler lines clear of the track motor.
10. Disconnect oil lines (12) from the track motor.
11. Fasten arms (13) to tool (A), and put tool (A) in position under the track motor. Use 1/2"-13 NC bolts 2 in. long to fasten arms (13) to the bosses on the sides of the track motor.
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To prevent injury be sure the track motor is fastened tightly to the jack so it can not fall. Weight of the track motor is 210 lb. (95 kg). |
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12. Remove four bolts (14), and pull the track motor off the shaft in the final drive. On a 953 the drive shaft for the final drive can come out with the track motor. If the drive shaft comes out with the track motor, remove it from the track motor, and install it back in the parking brake on the final drive.
NOTE: The shaft in the final drive has an O-ring seal and the track motor will be difficult to pull off the shaft.
13. Remove the track motor from under the machine. Fasten a hoist, and remove track motor (15) from tool (A). Weight of the track motor is 95 kg (210 lb.).
Install Track Motors
1. Fasten a hoist to the track motor, and put the motor in position on tool (A). Use 1/2"-13 NC bolts 2 in. long to fasten the arms on tool (A) to the bosses on the sides of the track motor. Weight of the track motor is 94.5 kg (210 lb.).
2. Be sure O-ring seal (1) is in position on the track motor, and put clean oil on the O-ring seal.
3. Move the track motor under the machine, and put the track motor in position with the splines in the motor in alignment with the splines on shaft (2) in the final drive. If the splines in the motor are not in alignment with the splines on the shaft in the final drive, do the following if the loader (earlier) is equipped with a track brake release hand pump. If the loader (later) does not have the hand pump, the FT1845 Brake Release Group must be used. See Service Magazine, April 16, 1984, for instructions on construction and usage of the FT1845 Brake Release Group.
a. Put only 11.4 liter (3 U.S. gal.) of clean 10W oil in the hydrostatic power control unit.
b. Move tube (3) to the tow position.
c. Put blocks in front of and behind the track so the machine cannot move.
d. Use hand pump (4) to release the track brakes.
e. Use a bar to move the sprocket only a very small amount.
f. Push the track motor into position over the shaft in the final drive.
g. Push plunger (5) to release the pressure in the track brake system, and make an application of the track brakes.
h. Move tube (3) back to the run position.
4. Install bolts (6) to hold the track motor in place, and tighen to a torque of 360 ± 50 N·m (270 ± 35 lb.ft.).
5. Be sure the O-ring seals are in place on high pressure oil lines (7). Connect the high pressure oil lines to the bosses on the track motor.
6. Connect case drain line (8) to the track motor.
7. Put clip (9) in position to hold the hydraulic oil cooler lines to the track motor, and install the bolt in the clip.
8. Connect outlet line (10) to the implement pump, and install clips (11) that hold the oil line to the frame.
9. Put the oil tube (13) in position, and install clips (14) to hold it in place. Connect oil line (12) from the hydraulic tank to tube (13).
10. Install clip (16) on the other end of tube (13) as shown. Connect implement pump suction line (15) to the tube.
11. Fill the hydrostatic power control unit with oil to the correct level.
12. Install the front and rear guards under the machine. Weight of the front guard is approximately: 943 or 953 - 78 kg (172 lb.). Weight of the rear guard is approximately: 943 - 66 kg (146 lb.), 953 - 75 kg (166 lb.).
13. Lift the machine, and remove the supports under the track. Lower the machine to the ground.
14. Fill the hydraulic tank with oil to the correct level. Loosen the test fitting on the implement pump to fill the pump with oil. If the implement pump is not filled with oil when the engine is started, the implement pump can be damaged.
Disassemble Track Motors
START BY:
a. remove track motors
1. Fasten adapter and bracket (1), part of tooling (A), to the track motor as shown with three 3/4"-10 NC bolts 2 1/4 inches long. Fasten a hoist, and put the track motor in position on the engine stand of tooling (A). Weight of the track motor is 94.5 kg (210 lb.).
2. Loosen plugs (2) in the shuttle valve. Remove bolts (3) and shuttle valve (4) from the pump head.
3. Remove plugs (2), the two balls and the pin from the shuttle valve. Remove O-ring seals (5) from the shuttle valve.
4. Bend the lock back, and remove bolt (6), the lock and retainer from the shaft.
| NOTICE |
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Do not let the port plate fall when the pump head is removed. The port plate can come off with the pump head or will have to be removed from the barrel after the pump head is removed. Use extra care not to damage the port plate. |
5. Put identification on the pump head as to its location on the body. Remove bolts (7), and pump head (8) from the body.
6. Remove port plate (9) and the two dowels from the pump head. Give protection to the faces of the port plate and the pump head.
NOTE: Use a 1P5510 tool group to check the head for surface wear where port plate (9) seats. The maximum permissible wear for the port plate seat area is .005 mm (.0002 in.). The maximum permissible wear for the full head surface is .010 mm (.0004 in.). If the surface of the head is worn .013 mm (.0005 in.) or more, the surface must be refinished. The maximum material that can be removed from the surface of the head is .762 mm (.030 in.).
7. Put identification on body (10) as to its location on the lower body.
| NOTICE |
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Do not let the pump barrel fall when body (10) is removed. Install protective plate (B) on the pump barrel. Keep protective plate (B) on the pump barrel at all times to prevent damage to the face of the pump barrel. |
8. Remove bolts (11) and body (10) from the lower body.
NOTE: It is not necessary to install the barrel over the same pistons at assembly so identification on the barrel and pistons is not necessary.
9. Carefully remove barrel (12) from the pistons.
NOTE: It is necessary to remove tool (B) from the barrel to remove the snap ring and shaft (14). Install tool (B) on the barrel again as soon as shaft (14) is removed.
10. Use tool (C) to remove the snap ring that holds shaft (14) in place. Remove shaft (14) from the barrel. Remove the spring and tube (13) from the shaft.
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The spring on shaft (14) can cause injury if all the tension in the spring is not released before tool (D) is removed. To prevent injury, be sure all the tension in the spring is released before tool (D) is removed from the shaft. |
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11. Use tool (D) and a 5/16" bolt at least 6 1/2 inches long with a nut and washers to put the spring in compression so the snap ring can be removed from the groove in shaft (14). Use tool (E) to remove the snap ring from the groove. Carefully loosen the bolt in tool (D) to release all the tension in the spring. Remove tool (D) after the tension in the spring is released.
12. Remove snap ring (17), retainer (15), one race (19), bearing (16), another race (19), spring (18) and the last race (19) from shaft (14).
13. Use tool (F) to remove small snap ring (20) from the end of shaft (14).
14. Use tooling (G) as shown to remove race (21) from the end of the shaft.
15. Use tool (H) to remove snap ring (22) from the barrel.
16. Use tooling (J) and a press to remove the bearing from barrel (12).
| NOTICE |
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Links (23) must be installed in the same inserts in drive plate (25) they are removed from, so put identification on links (23) as to their location in drive plate (25). Be extra careful not to damage the highly finished surfaces of the pistons. |
17. Use tool (C) to remove snap rings (24) that hold links (23) in position on drive plate (25). Remove the piston assemblies from the drive plate.
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Pistons (26) must be installed on the same links from which they are removed, so put identification on the pistons and links. |
18. Use tool (K) to remove snap ring (28) from piston (26). Remove piston (26), retainer (27), snap rings (28) and (24) and retainer (29) from the link. Disassemble the remainder of the piston assemblies.
19. Remove the bolts that hold retainer (30) to the body, and use screwdrivers in notches (31) to remove the retainer from the body.
20. Remove seal (32) and O-ring seal (33) from the retainer.
21. Fasten tool (L) to a work bench, over a hole that is 63.5 mm (2.50 in.) in diameter.
Typical Example
22. Install two 3/4"-10 NC forged eyebolts in body (36). Fasten a hoist, and remove the body from the bracket. Weight of the body is 36 kg (80 lb.).
23. Put body (36) in position on tool (L) as shown. Make sure pin (34) is engaged with the notch (groove) on the outside diameter of drive plate (25).
24. Bend the tab of the lock away from spanner nut (35).
Typical Example
| NOTICE |
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When tool (M) is used to loosen the spanner nut, be sure the teeth on the spanner socket do not engage in the teeth of the lock. |
25. Use tool (M) to remove the spanner nut from the drive plate.
26. Remove shims (37) from the drive plate.
Typical Example
27. Remove bearing cone (38) and the body from drive plate (25) as follows:
a. Put the body in a press with a support under the body so the drive plate can be pushed out the bottom of the body.
b. Put tool (N) on drive plate (25), and push the drive plate out of the body. Do not let the drive plate fall when it is free of bearing cone (38).
c. Remove bearing cone (38) from the body.
28. Use tooling (P) to remove both bearing cups from body (36).
Typical Example
29. Use a hammer and punch to push the roll pin in drive plate (25) into the joint assembly inside the drive plate.
Typical Example
30. Use tool group (J) and a press to push joint assembly (39) out of drive plate (25). Do not let the joint assembly fall when it is free of the drive plate.
NOTE: Visually inspect and Magnaflux the yokes and joint assembly (39) for cracks around the pin holes and ears. If any cracks are found, replace the yokes or joint assembly.
31. Remove the roll pin from joint assembly (39).
Typical Example
32. Use tooling (Q) and a press to push drive plate (25) out of bearing cone (40). The pins of tooling (Q) are installed through the holes in drive plate (25) as support for bearing cone (40).
33. If a replacement is necessary, use a press to push inserts (41) out of the drive plate.
Assemble Track Motors
1. Thoroughly clean all parts before assembly. Put a small amount of hydraulic oil on all parts before assembly.
2. Lower the temperature of the two bearing cups for body (1) for two hours minimum.
3. Install the two bearing cups in the body.
| NOTICE |
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Do not turn the body over to install the second bearing cup until the first bearing cup is warm. |
4. After the bearing cups have become warm, put body (1) in a press. Use tooling (A) and the press to put a force of 63 kN (7 ton) on the small bearing cup to push the bearing cup against its seat.
5. Turn the body over, and use tooling (B) and the press to put a force of 80 kN (9 ton) on the large bearing cup to push the bearing cup against its seat.
6. Lower the temperature of inserts (2), and use a press to install the inserts in drive plate (3).
7. Heat bearing cone (4) to a maximum temperature of 135°C (275°F) for a minimum of one hour. Install the bearing cone on drive plate (3).
| NOTICE |
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Push on only the inner race of bearing cone (4). |
8. After bearing cone (4) has become cool, use tool (C), spacer (5) and a press to put a force of 80 kN (9 ton) on the bearing cone to push the bearing cone against its seat on drive plate (3).
NOTE: The bearing cups and cone must be installed correctly to get a correct bearing adjustment when assembled.
NOTE: Visually inspect and Magnaflux the yokes and joint assembly (6) for cracks around the pin holes and ears. If any cracks are found, replace the yokes or joint assembly.
9. Put joint assembly (6) in position inside the drive plate. Install tooling (D) and a 5/8"-11 NC bolt 5 1/2 inches long. Pull the joint assembly into position in the drive plate.
10. Install pin (7) to hold joint assembly (6) in place.
11. Heat small bearing cone (8) to a maximum temperature of 135°C (275°F) for a minimum of one hour. Install the small bearing cone on the drive plate.
12. Install a 1"-14 NF bolt (9) six inches long with a nut and washer on tooling (E). Use tooling (E) to make sure the small bearing cone is installed all the way on the drive plate.
13. Fasten tool (F) to a work bench, over a hole that is 63.5 mm (2.50 in.) in diameter.
Typical Example
14. Put body (1) in position on tool (F). Make sure pin (10) is engaged with the notch (groove) on the outside diameter of the drive plate.
15. Install the spanner nut on the drive plate with the finished side face down. Install a 5/16"-18 NC bolt 1/2 in. long in body (1). The bolt is used with tool (J) to turn the body. Install tool (J) on the 5/16in. bolt with the center line of the torque wrench toward the center of the body as shown.
16. Tighten the spanner nut with tooling (N) while the body is turned with a 9S7354 Torque Wrench (J). The torque must be 0.4 to 1 N·m (4 to 9 lb.in.). For other lb.in. torque wrenches, the correct torque indication can be found with this formula:
"C" is the torque wrench reading.
"A" is the length of the torque wrench.
"B" is the distance from the center of the drive plate to the 5/16 in. bolt.
"T" is torque on bearings [T = 0.6 to 1.3 N·m (5 to 12 lb.in.)].
NOTE: The torque wrench must be installed on the bolt so it is in line with the center of the drive plate as shown.
17. Hit the end of the drive plate with a soft hammer to push the bearing cone against the spanner nut.
18. Put the body in a vise with the drive plate in a horizontal position.
19. Install tooling (H) as shown to check the end clearance in the bearings.
20. Push on the handle of tooling (H), and turn the drive plate backward and forward in each direction. Set the indicator on zero.
21. Pull on the handle of tooling (H), and turn the drive plate backward and forward in each direction. The indicator will show the total end clearance. The end clearance must be 0.013 to 0.051 mm (.0005 to .0020 in.).
NOTE: Steps 17 through 21 are done to check the bearing setting made in Step 16.
22. Find the thickness of the shim pack as follows:
a. Use tooling (G) to measure the distance from the end of drive plate (3) to the face of the inner race of bearing cone (8).
b. Use tooling (G) to measure the distance from the end of drive plate (3) to step (11) on the drive plate.
c. Subtract the distance found in (a) from the distance found in (b). The difference will be the thickness of the shim pack. Measure the thickness of the shim pack with a micrometer.
23. Install shim pack (12) on the drive plate.
24. Install lock (13) and spanner nut (14) on the drive plate. Install spanner nut (14) with the finished face down. Use tooling (N) to tighten the spanner nut to a torque of 540 N·m (400 lb.ft.).
25. Check the torque needed again to turn the body as in Step 16. The torque should be the same.
26. When the correct values of end play and rotation torque are found, bend one ear of lock (13) to hold the spanner nut tight.
27. Install the lip-type seal in retainer (16) with tooling (D) and 1"-14 NF bolt (15) six inches long with a nut and washer. Install the seal with the lip up as shown. Install the O-ring seal on the retainer. Put clean oil on the seals.
28. Fasten a hoist, and put the body assembly in position on tooling (S).
29. Install retainer (16) on the body.
30. Push race (18) on to shaft (19) with a press and two 3/4" flat washers (17).
31. Use tool (K) to install snap ring (20) to hold the bearing race on the shaft.
32. Install one race (21), spring (23), another race (21), bearing (24), last race (21), retainer (25) and snap ring (22) on shaft (19). Snap ring (22) cannot be installed in the groove until tooling (L) is used to put spring (23) in compression.
| NOTICE |
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When the bolt in tooling (L) is tightened to put the spring in compression, be sure the ear on retainer (25) is in alignment with the groove in the shaft. |
33. Use tool (L) and a 5/16" bolt at least 6 1/2 inches long with a nut and washers to put the spring in compression so snap ring (22) can be installed in the groove in shaft (19). Use tool (M) to install the snap ring in the groove.
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Spring (23) on the shaft can cause injury if snap ring (22) is not completely engaged in the groove in the shaft before tool (L) is removed. To prevent injury, be sure the snap ring is completely engaged in the groove, and carefully remove tool (L). |
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34. Carefully loosen the bolt in tool (L) until snap ring (22) holds the spring in compression. Remove tool (L).
35. Put barrel (27) under a press. Push bearing (26) into the barrel with tooling (P).
36. Use tool (T) to install the snap ring in the barrel to hold the bearing in place.
NOTE: Make sure the protective plate (Q) is put in position on the barrel face when work on or near the barrel is done.
37. Install shaft (19) in the barrel.
38. Use tool (R) to install the snap ring in the barrel to hold the shaft in place.
39. Install retainer (31), snap ring (32), snap ring (30) and retainer (29) on the link. Install piston (28) on the same link it was removed from, and install retainer (29) and snap ring (30) to hold the piston on the link. Assemble the remainder of the piston assemblies.
40. Install the piston assemblies on the drive plate. Install the retainers, and use tool (R) to install the snap rings in the drive plate that hold the piston assemblies in place.
41. Install the barrel over the joint assembly with wide tooth (33) in the barrel in alignment with wide groove (34) in the joint assembly.
42. Install the barrel the remainder of the way over the pistons.
43. Install O-ring seal (37) on the lower body and O-ring seal (35) on upper body (36).
44. Install upper body (36) in its original position on the lower body. Tighten the bolts that hold the upper body to the lower body to a torque of 88 ± 7 N·m (67 ± 5 lb.ft.).
45. Install tube (39) and spring (38) in the shaft. Be sure the tube is against its seat in the shaft. When the tube is correctly against its seat, the spring will be approximately 32.26 mm (1.27 in.) down from the top of the shaft.
46. Remove tool (Q) from the barrel. Put clean oil on the face of the barrel.
NOTE: Use a 1P5510 tool group to check the head for surface wear where the port plate seats. The maximum permissible wear for the port plate seat area is .005 mm (.0002 in.). The maximum permissible wear for the full head surface is .010 mm (.0004 in.). If the surface of the head is worn .013 mm (.0005 in.) or more, the surface must be refinished. The maximum amount of material that can be removed from the surface of the head is .762 mm (.030 in.).
47. Install dowels (41) in the pump head. Put clean grease on the pump head, and install port plate (40) on the pump head with the dowel holes in the port plate in alignment with dowels (41).
48. Install two 1/2"-13 NC guide bolts in the upper body. Install pump head (42) in its original position on the upper body, and install the bolts that hold it in place. Tighten the bolts to a torque of 88 ± 7 N·m (67 ± 5 lb.ft.).
49. Turn shaft (19) so the groove in the shaft is in alignment with the groove in the pump head.
50. Install retainer (43) with the pin in the retainer in alignment with the hole made by shaft (19) and the groove in the pump head. Install the lock and bolt that hold retainer (43) in place. Tighten the bolt to a torque of 88 ± 7 N·m (66 ± 5 lb.ft.), and bend the lock to hold the bolt tight.
51. Install O-ring seal (45) on plug (50) and O-ring seal (49) on plug (51).
52. Install ball (46) and plug (50) in shuttle valve (53). Install pin (47), ball (48) and plug (51) in shuttle valve (53). Install O-ring seals (44) and (52) on shuttle valve (53).
53. Put shuttle valve (53) in position on the pump head, and install the bolts that hold it in place.
54. Remove the plug from the side of the upper body, and fill the track motor with clean oil. Install the plug.
55. Fasten a hoist to the bracket, and remove the bracket and track motor from the engine repair stand. Weight of the track motor is 94.5 kg (210 lb.).
56. Remove the bracket from the track motor.
END BY:
a. install track motors