Page 1817 of 2321
(4) Using a suitable screwdriver, remove extension
housing axle oil seal (Fig. 35).Fig. 32 Pivot Ball Removal/Installation
1 - C-3752 SLIDE HAMMER
2 - REMOVER/INSTALLER 6891
3 - PIVOT BALL
Fig. 33 Input Bearing Retainer
1 - INPUT BEARING RETAINER
Fig. 34 Shift Cover Removal/Installation
1 - SHIFT COVER ASSEMBLY
Fig. 35 Extension Housing Seal
1 - SCREWDRIVER
2 - EXTENSION HOUSING
3 - SEAL
21a - 18 T850 MANUAL TRANSAXLERG
T850 MANUAL TRANSAXLE (Continued)
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Page 1818 of 2321
(5) Remove extension housing-to-case and differen-
tial cover bolts (Fig. 36).
(6) Place transaxle with bellhousing surface down.
(7) Remove backup lamp switch (Fig. 37).(8) Remove end plate (Fig. 38).
(9) Set up lifting bar (tool 8489) as shown in (Fig.
39).
(10) Lift up on bar (input shaft bearing side) and
remove input shaft bearing snap ring.
(11) Lift up on bar (intermediate shaft side) and
remove intermediate shaft bearing snap ring.
(12) Remove lifting bar 8489.
Fig. 36 Extension Housing-to-Case Bolts
1 - EXTENSION HOUSING
Fig. 37 Back-Up Lamp Switch
1 - BACK-UP LAMP SWITCH
Fig. 38 End Plate Bolts
1 - BOLT (11)
Fig. 39 Input Bearing Snap Ring
1 - SNAP RING PLIERS
2 - LIFTING BAR 8489
3 - SNAP RING
RGT850 MANUAL TRANSAXLE21a-19
T850 MANUAL TRANSAXLE (Continued)
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Page 1819 of 2321

(13) Remove end cover-to-case bolts (12) (Fig. 40).
(14) Remove end cover from transaxle (Fig. 41).
(15) Remove 3/4 shift rail bushing from end cover
using slide hammer C-3752 and remover 6786 (Fig.
42).
(16) Remove reverse idler bolt (Fig. 43). Remove
reverse idler gear, washers, and shaft upon geartrain
removal.
(17) Remove 1-2/5-R shift rail (Fig. 44).
(18) Install lifting bar 8489.
(19) Lift geartrain (w/reverse idler gear assy.) out
of transaxle and install on fixture 8487 (Fig. 45).
(20) Remove remaining shift rail and forks from
geartrain (Fig. 45).
(21) Remove lifting bar from geartrain.NOTE: At this point, differential bearing turning
torque should be measured to ensure proper shim
selection upon reassembly.
(22) Reinstall and torque extension housing and
meaure differential turning torque. (Refer to 21 -
TRANSMISSION/TRANSAXLE/MANUAL/DIFFER-
ENTIAL - ADJUSTMENTS)
(23) Remove differential cover bolts.
(24) Remove differential cover. If necessary, use a
soft tipped hammer to aid in removal.
(25) Remove extension housing.
(26) Remove differential assembly. Note orienta-
tion of shim, oil slinger, and differential side bearing
races (Fig. 46).
Fig. 40 End Cover Bolts
1 - BOLT (12)
Fig. 41 End Cover Removal/Installation
1 - END COVER
2 - OIL TROUGH
Fig. 42 3/4 Shift Rail Bushing Removal
1 - SLIDE HAMMER C-3752
2 - REMOVER 6786
Fig. 43 Reverse Idler Shaft Bolt
21a - 20 T850 MANUAL TRANSAXLERG
T850 MANUAL TRANSAXLE (Continued)
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Page 1820 of 2321
(27) Remove differential chip collector magnet and
clean (Fig. 47).Magnet is adhered with RTV, and
may require force to remove.
(28) Remove intermediate shaft bearing race with
puller 8472 (Fig. 48).
(29) Remove shift rail bushing from case with
remover 6786 and slide hammer C-3752 (Fig. 49).
(30) Remove input shaft bearing using an arbor
press and tool 8474 (Fig. 50).
Fig. 44 1/2-5/R Shift Rail Removal/Installation
1 - 1/2-5/R SHIFT RAIL
Fig. 45 Shift Fork/Rail Orientation
1 - 5/R FORK
2 - 3/4 RAIL ASSEMBLY
3 - 3/4 FORK
4 - 1/2 FORK
Fig. 46 Differential Shim/Slinger Orientation
1 - SLINGER
2 - BEARING RACE
3 - DIFFERENTIAL ASSEMBLY
4 - SHIM (SELECT)
Fig. 47 Differential Magnet
1 - MAGNET
RGT850 MANUAL TRANSAXLE21a-21
T850 MANUAL TRANSAXLE (Continued)
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Page 1821 of 2321
ASSEMBLY
NOTE: When assembling this transaxle, always use
NEW snap rings.
NOTE: Before assembling transaxle, differential
turning torque must be measured and adjusted.
(Refer to 21 - TRANSMISSION/TRANSAXLE/MANU-
AL/DIFFERENTIAL - ADJUSTMENTS). Differential
turning torque must be measured with geartrain out
of case.
(1) Install input shaft bearing using an arbor press
and remover/installer 8474 (Fig. 51).
(2) Install shift shaft bushing to case using
installer 8475 (Fig. 52).
Fig. 48 Intermediate Shaft Bearing Race Removal
1 - REMOVER 8472
Fig. 49 Shift Rail Bushing Removal
1 - SLIDE HAMMER C-3752
2 - REMOVER 6786
Fig. 50 Input Shaft Bearing Removal
1 - ARBOR PRESS
2 - DRIVER HANDLE C-4171
3 - REMOVER/INSTALLER 8474
21a - 22 T850 MANUAL TRANSAXLERG
T850 MANUAL TRANSAXLE (Continued)
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Page 1822 of 2321

(3) Install intermediate shaft bearing race to case
with an arbor press, driver handle C-4171, and
installer 8471 (Fig. 53). Press until installer 8471
bottoms on transaxle case.
NOTE: If input shaft assembly was not disassem-
bled, it is necessary to remove input shaft sealed
ball bearing before assembling transaxle. (Refer to
21 - TRANSMISSION/TRANSAXLE/MANUAL/INPUT
SHAFT - DISASSEMBLY)
(4) Install assembled input and intermediate
shafts to fixture 8487 (Fig. 54).
(5) Install shift forks and 3/4 rail assembly to
geartrain as shown in (Fig. 55).
NOTE: Before installing geartrain, make sure that
input shaft sealed roller bearing is not installed,
otherwise reverse idler assembly installation will be
difficult. (Refer to 21 - TRANSMISSION/TRANSAXLE/
MANUAL/INPUT SHAFT - DISASSEMBLY)
(6) Install lifting bar 8489 to geartrain. Install
geartrain to case.When installing geartrain to
case, use care not to damage bearing surfaces.
Fig. 51 Input Shaft Bearing Installation
1 - ARBOR PRESS
2 - C-4171 DRIVER HANDLE
3 - REMOVER/INSTALLER 8474
4 - INPUT SHAFT BEARING
Fig. 52 Shift Shaft Bushing Installation
1 - INSTALLER 8475
2 - SHIFT SHAFT BUSHING
Fig. 53 Install Intermediate Shaft Bearing Race
1 - ARBOR PRESS
2 - DRIVER HANDLE C-4171
3 - INSTALLER 8471
4 - INTERMEDIATE SHAFT BEARING RACE
RGT850 MANUAL TRANSAXLE21a-23
T850 MANUAL TRANSAXLE (Continued)
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Page 1823 of 2321
(7) Remove lifting bar 8489 from geartrain.
(8) Install shift 1/2-5/R rail as shown in (Fig. 56).
(9) Install reverse idler shaft into position (Fig.
57). Install and torque shaft-to-case bolt to 54 N´m
(40 ft. lbs.).(10) Install reverse idler gear bearing (Fig. 58).
(11) Install reverse idler gear with hub down as
shown in (Fig. 59).
(12) Install flat washer (Fig. 60).
(13) Install wave washer (Fig. 61).
(14) Install input shaft sealed roller bearing using
installer 8482 (Fig. 62).
(15) Installnewinput shaft bearing snap ring
(Fig. 63).
Fig. 54 Install Geartrain to Fixture 8487
1 - INTERMEDIATE SHAFT
2 - INPUT SHAFT
3 - FIXTURE 8487
Fig. 55 Shift Fork/Rail Orientation
1 - 5/R FORK
2 - 3/4 RAIL ASSEMBLY
3 - 3/4 FORK
4 - 1/2 FORK
21a - 24 T850 MANUAL TRANSAXLERG
T850 MANUAL TRANSAXLE (Continued)
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Page 1824 of 2321
Fig. 56 Shift Rail Installation
1 - 1/2-5/R SHIFT RAIL
Fig. 57 Install Reverse Idler Shaft
1 - REVERSE IDLER SHAFT
2 - BOLT
Fig. 58 Install Reverse Idler Gear Bearing
1 - NEEDLE BEARING
2 - REVERSE IDLER SHAFT
Fig. 59 Install Reverse Idler Gear
1 - REVERSE IDLER GEAR
RGT850 MANUAL TRANSAXLE21a-25
T850 MANUAL TRANSAXLE (Continued)
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