TM 5-1940-322-24
0166 00
TRANSMISSION REPAIR (Contd)
CLUTCH PACK ASSEMBLY
NOTE
Forward and reverse clutch packs are assembled the same way. The
forward clutch pack is shown.
Place inner bearing races and tapered-roller bearing in a 275 F
(135 C) oven for 30 minutes immediately prior to installation.
Submerge all sintered clutch plates in oil for a minimum of one
hour prior to assembly. Use the same oil that is normally used in
the transmission.
1.
Apply light coat of oil to new piston ring (2) and O-ring (1) and install piston ring (2) and O-ring (1) on
clutch piston (3).
2.
Place piston O-ring protector tool TD-300421 over end of clutch shaft (4). Apply light coat of oil to
clutch shaft (4) and inside of clutch gear (5). Install clutch piston (3) on clutch shaft (4) and clutch
gear (5). Remove protector from end of clutch shaft (4).
3.
Position clutch spring (8), clutch spring retainer (7), and snapring (6) down on clutch shaft (4).
4.
Support clutch gear (5) on hydraulic press. Install clutch spring compressing tool TD-300420 over
clutch shaft (4) and compress clutch spring retainer (7) until snapring (6) can be locked into groove (9)
on clutch shaft (4). Release pressure on hydraulic press and remove clutch spring compressing tool
from clutch shaft (4).
5.
Install oiled clutch plates as follows: Starting with one friction clutch plate (16), alternatively install
ten friction clutch plates (16) and nine steel clutch plates (17) in gear (5).
6.
Install clutch backing plate (15) and snapring (14) on clutch gear (5).
7.
Position front thrust race (13) and bronze thrust race washer (18) on input shaft (4) and install front
thrust race (13) over snapring (6). Install bronze thrust race washer (18) on input shaft (4).
8.
Pre-align spline teeth on steel clutch plates (17). Install forward pinion (12) on input shaft (4),
aligning steel clutch plates (17) with splines on pinion (12).
9.
Position rear thrust race (19) on forward pinion (12) and install bronze thrust race washer (11) and
rear thrust race (19) on forward pinion (12).
10.
Install heated tapered-roller bearing (10) on clutch shaft (4).
11.
Install new piston ring (20) on bottom groove (21) of clutch shaft (4).
12.
Repeat steps 1 through 10 to assemble reverse clutch pack.
13.
Perform steps 14 through 20 to set end play on all three shafts.
1
6
2
7
3
8
4
4
9
O-RING PROTECTOR TOOL
TD-300421
5
5
0166 00-16
