Paccar CARCO 50B, Service Manual

Page: 43 / 61

41
Using a suitable press, depress spring retainer (8) and
remove retaining ring (6) and clutch spring retainer (8).
Remove the eight clutch piston return springs (3). During
the rebuild of clutch assemblies, it is recommended to
replace all eight springs. Minimum spring free length is
1.41 in. (35.8 mm) for springs in splined housings, and
1.16 in. (29.5 mm) for springs in slotted housings.
Turn the clutch housing over and tap on bench top to
remove clutch piston (14). Inspect piston for wear or dam-
age.
For splined housings, remove O-Rings (4,5) from the
inner and outer grooves of the clutch housing. For slot-
ted housings, remove O-Rings and back-up rings from
the piston. Replace O-Rings and/or back-up rings upon
reassembly.
Remove the check valve seat (9) and steel ball (2) from
the back side of clutch housing (11). Inspect for wear and
make sure all foreign material that may restrict the steel
ball seating action is removed.
Remove the two flush plugs (1) from the back side of the
clutch housing.
ASSEMBLY
Thoroughly clean and inspect all components prior to
assembly.
Slotted
Clutch
Assembly
ITEM DESCRIPTION QTY.
1 PLUG (-4 ORB) 2
2 STEEL CHECK BALL 1
3 SPRING 8
4 O-RING 1
5 O-RING 1
6 RETAINING RING 1
7 RETAINING RING 1
8 SPRING RETAINER 1
9 CHECK VALVE SEAT 1
10 PRESSURE PLATE 1
11 CLUTCH HOUSING 1
ITEM DESCRIPTION QTY.
12 DISC - FRICTION 5
13 DISC - STEEL 5
14 CLUTCH PISTON 1
15 O-RING 2
16 BACKUP RING 1
17 BACKUP RING 1
18 WAVE SPRING 4