CX31 On-Highway Transmission Caterpillar

Transmission Planetary - Disassemble

Usage:

CX31 D9F

Disassembly Procedure

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Table 1
Required Tools
Tool	Part Number	Part Description	Qty
A	3E-3880	Eyebolt	1
B	9U-7479	Compressing Tube	1
C	1U-9889	Crossblock	1
	1B-3573	Bolt	2
	8T-4994	Hard Washer	2
	8T-4122	Hard Washer	2
	8T-4223	Hard Washer	2
	6V-8188	Nut	2
D	1H-3107	Push-Puller Tool Gp	1
D	5F-7343	Bearing Puller Gp	1
E	1P-0520	Driver Gp	1
F	-	Threaded Rod 1/2 - 13 by 11 in	2
	6V-8188	Nut	4
	5F-7344	Puller Block	2
G	1U-5750	Engine Stand	1
	350-4401	Adapter	1
	1P-2850	Oil Drain Cart	1
H	138-7575	Link Bracket	3
J	1P-0510	Driver Gp	1
K	FT-1028	Sleeve Assembly	1
K	1P-0520	Driver Gp	1
L	138-7573	Link Bracket	2
M	376-1570	Plug As. - Extension	1

Start By:

Remove the torque converter. Refer to Disassembly and Assembly, "Torque Converter - Remove".
Remove the torque converter housing. Refer to Disassembly and Assembly, "Torque Converter Housing - Remove".
Remove the oil filter and base. Refer to Disassembly and Assembly, "Oil Filter and Base (Power Train) - Remove and Install"

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NOTICE

Keep all parts clean from contaminants. Contaminants may cause rapid wear and shortened component life.

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NOTICE

Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting, and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids. Refer to Special Publication, NENG2500, "Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Cat products. Dispose of all fluids according to local regulations and mandates.

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Illustration 1	g02453061

Use Tooling (A) and a suitable lifting device in order to remove rotating clutch (1). The weight of rotating clutch (1) is approximately 27 kg (60 lb).
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Illustration 2 g02388957
Remove ring seals (2). Remove thrust bearing (3) and bearing (4).
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Illustration 3 g02388976
Turn over rotating clutch (1). Remove retaining ring (5) and plate (6).
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Illustration 4 g02388980
Remove retaining ring (7). Remove hub (8).
Remove clutch discs and plates (9).
Note: Note the quantity and the order of the clutch discs and plates for installation purposes.
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Illustration 5 g02388981

Remove thrust bearing (10).

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Illustration 6	g02453062

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Personal injury can result from being struck by parts propelled by a released spring force.
Make sure to wear all necessary protective equipment.

Follow the recommended procedure and use all recommended tooling to release the spring force.

Use Tooling (B) and a suitable press in order to compress retainer (11) and spring (12). Remove retaining ring (13).
Slowly release the tension and remove retainer (11) and spring (12).
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Illustration 7 g02389318
Remove piston (14).
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Illustration 8 g02389336
Remove ring seal (15) from piston (14).
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Illustration 9 g02389338
Remove bearing (16). Remove seal ring (17) and O-ring seal (18).
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Illustration 10 g02389340
Remove retaining ring (19), plate (20), thrust disc (21), and hub (22).
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Illustration 11 g02389344

Remove plates and discs (23).

Note: Note the quantity and the order of the discs and plates for installation purposes.

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Illustration 12	g02453063

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Personal injury can result from being struck by parts propelled by a released spring force.
Make sure to wear all necessary protective equipment.

Follow the recommended procedure and use all recommended tooling to release the spring force.

Use Tooling (C) in order to retain balance piston (24).
Remove screws (25).
Slowly loosen Tooling (C). Remove Tooling (C). Remove balance piston (24).
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Illustration 13 g02389349
Remove seal ring (26) from balance piston (24).
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Illustration 14 g02389356
Remove spring (27).
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Illustration 15 g02389357
Remove piston (28).
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Illustration 16 g02389376
Remove seal ring (29) from piston (28).
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Illustration 17 g02389380
Remove screws (30). Remove hub assembly (31).
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Illustration 18 g02389396

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Illustration 19 g02389397
Remove bearing assembly (32), seal ring (33), and O-ring seal (34).
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Illustration 20 g02389401
Remove O-ring seals (35).
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Illustration 21 g02453064
Use Tooling (D) in order to remove housing (36) and bearing cone (37).
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Illustration 22 g02389536
Remove bearing cup (38) from housing (36).
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Illustration 23 g02389557

Remove seal rings (39).

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Illustration 24	g02389559

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Personal injury can result from being struck by parts propelled by a released spring force.
Make sure to wear all necessary protective equipment.

Follow the recommended procedure and use all recommended tooling to release the spring force.

Remove bolts (40) and manifold assembly (41).
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Illustration 25 g02389698

Remove O-ring seals (42), spring (43), and sun gear (44).

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Illustration 26	g02389699

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Personal injury can result from being struck by parts propelled by a released spring force.
Make sure to wear all necessary protective equipment.

Follow the recommended procedure and use all recommended tooling to release the spring force.

Remove thrust bearing (45).
Remove discs and plates (46). Remove pins (47) and springs (48).
Note: Note the quantity and the order of the discs and plates for installation purposes.
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Illustration 27 g02389701
Use two people in order to remove planetary carrier (49). The weight of planetary carrier (49) is approximately 16 kg (35 lb).
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Illustration 28 g02389702
Compress retaining ring (50). Remove planetary carrier (49) from ring gear (51).
Note: Use suitable blocking in order to support the planetary carrier.
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Illustration 29 g02389703

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Illustration 30 g02389704
Use Tooling (E) in order to remove bearing sleeve (52). Drive pin (53) into shaft (54) far enough to remove shaft (54). Remove pin (53) from shaft (54). Remove planetary gear (55).
Remove thrust discs (56), and bearings (57) from planetary gear (55).
Repeat Step 33 and Step 34 for the remaining planetary gears.
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Illustration 31 g02389710
Remove piston (58). Remove thrust disc (59). Remove thrust bearing (60).
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Illustration 32 g02389715
Remove seal ring (61) and seal ring (62) from piston (58).
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Illustration 33 g02453068
Use Tooling (F) in order to support the remaining clutches.
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Illustration 34 g02389736
Use Tooling (G) in order to reposition the transmission. The weight of the transmission is approximately 181 kg (400 lb). Disconnect harness assemblies (63) and remove the connecting hardware.
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Illustration 35 g02389737
Remove bolt (64) and the retainer. Remove speed sensor (65). Remove bolt (66) and the retainer. Remove speed sensor (67).
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Illustration 36 g02389738
Remove bolt (68), retainer (69), O-ring seal (70), and yoke (71).
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Illustration 37 g02389756
Remove O-ring seal (72). Repeat this step for the remaining speed sensor.
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Illustration 38 g02451297

Use Tooling (M) in order to retain the piston as housing assembly (73) is removed.

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Illustration 39	g02451498

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Illustration 40	g02450481

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Personal injury can result from being struck by parts propelled by a released spring force.
Make sure to wear all necessary protective equipment.

Follow the recommended procedure and use all recommended tooling to release the spring force.

Attach Tooling (H) and a suitable lifting device onto housing assembly (73). The weight of housing assembly (73) and planetary carrier (74) is approximately 39 kg (86 lb). Remove bolts (75). Remove housing assembly (73) and planetary carrier (74) as a unit.
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Illustration 41 g02451136
Remove Tooling (M). Remove piston (76).
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Illustration 42 g02451277
Remove seals (77) from piston (76).
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Illustration 43 g02451578
Remove lip seal (78). Remove output rotor (79).
Note: Note the orientation of the output rotor for assembly purposes.
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Illustration 44 g02451557

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Illustration 45 g02452489
Use Tooling (K) and a suitable press in order to separate planetary carrier (74) from housing assembly (73).
Note: Do not press against the end of the shaft.
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Illustration 46 g02451678
Remove bearing cone (80).
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Illustration 47 g02451680

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Illustration 48 g02451681
Remove retaining ring (81). Use Tooling (J), bearing cone (80), and a suitable press in order to remove bearing cup (82).
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Illustration 49 g02452337
Remove bearing spacer (83). Remove bearing cone (84).
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Illustration 50 g02452356

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Illustration 51 g02452372
Drive pin (85) into shaft (86) far enough to remove shaft (86). Remove pin (85) from shaft (86). Remove planetary gear (87).
Remove thrust washers (88) and bearings (89) from planetary gear (87).
Repeat Step 52 and Step 53 for the remaining planetary gears.
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Illustration 52 g02452500
Remove shaft (90) from planetary carrier (74). Remove bearing assembly (91) from shaft (90).
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Illustration 53 g02452517
Remove seal (92) and O-ring seals (93).
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Illustration 54 g02452503
Remove plates and discs (94). Remove pins (95) and springs (96).
Note: Note the quantity and the order of the plates and discs for installation purposes.
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Illustration 55 g02452516
Remove thrust bearing (97). Remove shaft assembly (98).
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Illustration 56 g02452536
Remove retaining ring (99), sun gear (100), and bearing carrier (101).
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Illustration 57 g02452539
Remove thrust bearing (102). Use Tooling (L) in order to remove planetary carrier (103). The weight of planetary carrier (103) is approximately 20 kg (44 lb).
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Illustration 58 g02452541
Position planetary carrier (103) onto suitable blocking. Remove retaining ring (104). Compress lock ring (105) and remove planetary carrier (103) from ring gear (106).
Note: Use suitable blocking in order to support the planetary carrier.
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Illustration 59 g02452542

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Illustration 60 g02400836
Drive pin (107) into shaft (108) far enough to remove shaft (108). Remove pin (107) from shaft (108). Remove planetary gear (109).
Remove thrust washers (110) and bearing (111) from planetary gear (109).
Repeat Step 62 and Step 63 for the remaining planetary gears.
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Illustration 61 g02452545
Remove ring gear (112) and clutch plate (113).
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Illustration 62 g02452546
Remove plates and discs (114). Remove pins (115) and springs (116).
Note: Note the quantity and the order of the plates and discs for installation purposes.
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Illustration 63 g02452547
Remove piston (117).
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Illustration 64 g02452549
Remove ring seal (118) and ring seal (119).