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| Illustration 1 | g02436560 |
484 Transfer Case - 369-8897 Transfer Gear Gp (V) Magnetic plug / oil drain port (2) Differential / Lockup piston (3) Pneumatic (air) line connection (4) Air defuser (5) Threaded hole used for assembly (6) Detent switch - The detent switch is hidden behind callout (63) in this view. The detent switch detects when transfer case is in neutral and sends signal to ECM. (56) Access plate (57) Serial number plate (58) Breather (59) Mounting holes - (M16 - 2) (60) Lube line (60 psi) (61) Ball switch (indicates shifting status) (62) Shifting piston (default to high 1:1) (high 1:1, neutral, low =3.0882:1) (63) Customer interface connector (Wire harness receptacle) (64) Pneumatic line (Neutral) (65) Lube line (0.41340 MPa (60 psi)) (66) Rear output yoke (67) Mount for stabilizer bar (68) Lube line (69) Pneumatic line (shifting piston for low gear (70) Pneumatic line (lock and unlock differential) (71) Low gear solenoid (72) Differential lock solenoid (73) Neutral solenoid (74) Oil inlet from pump (pump on CX28 PTO) (75) Oil temperature sensor (76) Output speed sensor (77) Lifting eye - 5/8 - 11 | |
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| Illustration 2 | g02625178 |
(78) Washer (79) Retaining ring (80) Ball bearing (81) Bearing carrier (82) Shim pack (83) Roller bearing cup (84) Roller bearing cone (85) Input gear (86) Tapered cup (87) Collar (88) Carrier assembly (89) Ring gear (90) Wave spring (91) Cover (92) Ball bearing (93) Seal carrier (94) Sun gear (95) Shim pack (96) Roller bearing cup (97) Seal carrier (98) Temperature sensor (99) Planet gear (100) #4 orificed o-ring to #4 JIC (101) Output Yoke (102) Rear output shaft (103) Self locking 1 1/4 - 12 nut (104) Washer (105) Output cover (106) Roller bearing cone (107) Roller bearing cup (108) Shim pack (109) Nut (110) Tapered roller cup (111) Bearing cone (112) Sun gear (113) Gear assembly (114) Fork (115) Collar (116) Roller bearing cup (117) Roller bearing cone (118) Forward output shaft (119) Main housing (120) Idler gear (121) Key (122) Shaft (123) Roller bearing cup (124) Self locking 1 1/4 - 12 nut (125) Input shaft | |
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| Illustration 3 | g02646757 |
(126) Input yoke (127) Lip type seal (128) Sleeve | |
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| Illustration 4 | g02638360 |
(85) Input gear (113) Gear assembly (120) Idler gear (125) Input shaft (129) Spring (130) Strainer assembly | |
Torque from the transmission output, which is attached to the input shaft (125) via a short coupling, drives the input shaft to rotate. The input shaft is splined to the sun gear (94). In HIGH, the sun gear (94) is splined to the input gear (85) by the collar (87). In LOW, the sun gear (94), is splined to the carrier (88) by the collar (87). The gear carrier assembly (88) drives the input gear (85). The speed ratio between the input shaft (125) and input gear (85) in HIGH is 1:1, and the speed ratio in LOW is 3.0882:1. The collar (87), may be positioned so that neither the gear carrier assembly (88) or the input gear (85) are engaged and the transfer gear is in NEUTRAL.
The input gear (85) drives the idler gear (120). The idler gear (120) drives the gear assembly (113). In differential locked mode, the gear assembly (113) is splined to the forward output shaft (118) via the collar (115). Both the idler gear (120) and the forward output shaft (118) rotate together which causes the rear output shaft (102) to rotate at the same speed. When the differential is unlocked the gear assembly (113) will transmit torque through the gear carrier assembly (113) and planet gears (99) to the sun gear (112) which is splined to the forward output shaft (118). The gear carrier assembly (113) and planet gears (99) also transmit torque to the rear output shaft (102). When the differential is unlocked, the power is split 68 percent to the rear output shaft and 32 percent to the front output shaft because of the gear ratio between gear carrier assembly (113) and sun gear (112) .
The transfer case has a pressurized lubrication circuit (60), (65), and (68). The pump is mounted on the rear PTO of the transmission. Placing a relief valve on the cooler circuit for the vehicle using the transfer case is recommended.
Note: The manifold is labeled with a D, N, and L.
The transfer case utilizes vehicle air to actuate the shifters. There is a solenoid for differential lock (72), neutral (73), and HIGH and LOW gear (71). These solenoids will control air to actuate pistons that shift dog clutches. The default is high for the top clutch and unlocked differential for the lower clutch.
The vehicle will need to be stopped to shift from high to low. The operator may shift from Low to High using SHIFT ON THE ROLL using the shift pad. When conditions have been met, the power train will momentarily take throttle control from the operator. Electronically, the power train will then shift from Low to High to minimize power interruption. (High gear ratio is 1:1).