Usage:
1. Drain the oil from the hydraulic oil tank.
2. Put identification on all oil lines as to their location on the swivel joint. Disconnect four oil lines (4) from the rear of the swivel joint (6).
3. Disconnect oil lines (2) and (3) from the front of the swivel joint (6).
4. Remove cotter pin (5) and the washer. Remove pin (7) from the swivel joint (6).
5. Fasten a hoist to the swivel joint (6). Remove four bolts (1) that hold the swivel joint to the circle drawbar. Remove swivel joint (6). Weight is 34 Kg (75 lbs.).
NOTE: The following steps are for installation of the swivel joint.
6. Fasten a hoist to swivel joint (6). Put the swivel joint in position on the circle drawbar. Install four bolts (1) that hold the swivel joint to the circle drawbar.
7. Install pin (7) that holds the guide assembly to the swivel joint (6). Install the washer and the cotter pin (5) on pin (7).
8. Connect oil lines (2) and (3) to their correct locations on the front of the swivel joint.
9. Connect four oil lines (4) to their correct locations on the rear of the swivel joint (6).
10. Fill the hydraulic tank with oil to its correct level.
Disassemble And Assemble Swivel Joint
Start By:
a. remove swivel joint
1. Remove screws (5) and retainer (1) from body (2). Remove the shims from under the retainer. Remove the seal from the retainer.
2. Remove bolts (4) and the cover from rotor (3). Remove the O-ring seal from the cover.
3. Remove rotor (3) from body (2) with an arbor press and tool (A).
4. Remove seals (6) from body (2).
5. Remove seal (7) and (8) from rotor (3).
NOTE: The following steps are for assembly of the swivel joint.
6. Install new seals (8) and (7) on rotor (3). Put SAE 10 oil on the seals.
7. Install new seals (6) in the body (2). Put SAE 10 oil on the seals.
8. Install rotor (3) in body (2) with an arbor press.
9. Install new O-ring seals (10) in cover (9). Put cover (9) in position on rotor (3). Install the bolts (4) that hold it.
10. Install new seal (11) on retainer (1). Put shims (12) in position on the rotor (3). Put retainer (11) in position on body (2). Install screws (5) that hold the retainer to the rotor. Measure the distance between the retainer and the body with a feeler gauge. Add, or take away shims to get a gap of 0.13 to 0.51 mm (.005 to .020 in.) between the retainer (1) and the body (2).
End By:
a. install swivel joint
Remove And Install Blade (Hydraulic Sideshift
NOTE: The illustrations shown are of a 12G Motor Grader.
1. Move blade to the right as far as possible. Lower the blade until it is just off the ground.
2. Remove cotter pin (7) from pin (6). Remove pin (6) from bracket (8). Retract cylinder rod (5) into the sideshift cylinder.
3. Install tool (A) on blade (9). Fasten a hoist to tool (A). Use blocks (11) between rod end (5) and bracket (8) to push blade out of circle group (10).
NOTE: As blade (9) is moved out of the circle group (10), the upper wear strips and shims will fall out from the three brackets (4).
4. Install the other link bracket, tool (A) and a hoist as the left corner of blade (9) reaches bracket (4).
5. Remove blade (9). The weight of blade (9) is 650 Kg (1435 lbs.).
NOTE: The following steps are for installation of the blade.
6. Install the shims and lower the wear strips (13) in the two brackets (4).
7. Remove the bolts and two plates (2). Remove the bolts and the guard assembly (12).
8. Fasten a chain (14) to cylinder rod (5) and bracket (8). Pull blade (9) into bracket (4) and into the circle group (10). Remove tool (A).
9. Remove three bolts (1) and plate (2).
10. Remove chain (14). Position cylinder rod (5) in bracket (8) and install pin (6) and cotter (7) that holds the cylinder rod to bracket (8).
11. Install strips and shims. Position plates (2) and install bolts (1).
NOTE: To find minimum clearance, sideshift blade (9) through the full range, with shims divided equally as possible, between the top and bottom wear strips.
Remove And Install Circle
Start By:
a. remove blade assembly
b. remove blade tip cylinder
1. Disconnect four oil lines (6) for blade tip and sideshift, (if so equipped).
2. Remove two bolts (8) from guard assembly (3). Remove cotter pin, washers and pin (7) from the guard assembly (3). Remove guard assembly (3) from the circle group.
3. Put tooling (A) under circle (13). Loosen the nuts on setscrews (4) and turn setscrews away from shoes (5). Put identification on shims (10) and shoes (5) as to their location on drawbar (12).
4. Remove bolts (11), shims (10) shoes (5) and strips (9) from the draw bar. Fasten a hoist to circle (13). Remove tooling (A) from under circle (13). Start the engine. Move the machine back far enough to remove the circle drive pinion (2) from engagement in circle (13). Lift drawbar (12) away from circle (13). Lower circle (13) to the ground. Remove the circle from under the machine. Remove strips (14) from the circle (13). The weights of the standard equipped circles are 120G and 130G, 12G, 476 Kg (1050 lbs.), 12G, 510 Kg (1125 lbs.), and the 140G, 563 Kg (1250 lbs.).
NOTE: The following steps are for installation of the circle.
5. Position circle (13) under the machine. Fasten a hoist to circle (13). Raise the circle and install tool (A) under the circle. Remove the hoist. Place the strips (14) on the circle. Start the engine and lower the drawbar onto the circle and strips (14). Move the machine forward to put the circle drive pinion (2) in engagement with circle (13). A floor jack can be used to help put circle (13) in position with drawbar (12).
6. Install strips (14) and (15), shims (10), shoes (5), and bolts (11) on circle drawbar (12). Do not tighten bolts (11) at this time.
NOTE: Use shims (10) as required to obtain a maximum dimension "B" of 0.5 mm (.020 in.) clearance at the smallest gap between each strip (14) and circle (13). Circle (13) must be able to rotate 360° without stalling the circle drive motor at 13800 kPa (2000 psi).
7. With circle (13) in contact with front shoes (5), adjust screws (4) on each side and rear shoes to obtain a maximum clearance "C" of 0.8 mm (.03 in.).
8. Tighten the nuts on screws (4) on the side and rear shoes (5) to a torque of 200 ± 25 N·m (150 ± 18 lb.ft.).
9. Adjust the screws (4) on the front shoes (5) to obtain circle (13) to pinion (2) clearance "D" of 50 + 2.5 - 0.5 mm (1.97 + .10 - .02 in.), for the 12G, 130G and 140G.
10. Adjust the screws (4) on the front shoes (5) to obtain clearance "E" between circle tooth (13) and drive pinion (2) of 4.3 + 2.5 - 0.5 mm (.17 + .10 - .02 in.) for the 120G.
11. Tighten the nuts on screws (4) to a torque of 200 ± 25 N·m (150 ± 18 lb.ft.).
12. Position guard assembly (3) in position on the circle group. Install pin, washers and cotter pin (7). Install two bolts (8).
13. Connect four oil lines (6) to swivel joint (1).
14. Remove tool (A).
15. End By:
a. install blade assembly
b. install blade tip cylinder
c. fill the hydraulic tank with oil to its correct level.