2007 ISUZU KB P190 Workshop Repair Manual

Page 4193 of 6020

ISUZU KB P190 2007  Workshop Repair Manual 7A4–58 UNIT REPAIR (AW30–40LE)
Disassembly
Remove direct clutch drum assembly from forward 
clutch assembly.
248RY00028
1. Check piston stroke of direct clutch (C –2).
Place the direct clutch as

Page 4194 of 6020

ISUZU KB P190 2007  Workshop Repair Manual UNIT REPAIR (AW30–40LE) 7A4–59
7. Place the direct clutch drum onto the OD support.Holding the direct clutch piston by hand, apply 
compressed air to the OD support to remove the
direct clutch pis

Page 4195 of 6020

ISUZU KB P190 2007  Workshop Repair Manual 7A4–60 UNIT REPAIR (AW30–40LE)
4. Check direct clutch drum bushing.Using a dial indicator, measure the inside diameter 
of the clutch drum bushing.
Maximum inside diameter: 53.99 mm (2.1256 in) If

Page 4196 of 6020

ISUZU KB P190 2007  Workshop Repair Manual UNIT REPAIR (AW30–40LE) 7A4–61
5. Install four plates and four discs.Install in order : P –D –P –D –P –D –P –D
P : Plate, D : Disc
248RY00062
6. Install the flange, with the flat sid

Page 4197 of 6020

ISUZU KB P190 2007  Workshop Repair Manual 7A4–62 UNIT REPAIR (AW30–40LE)
Flange sizes
RUW37ASH004901
9. Coat the clutch drum thrust washer (plastic) withpetroleum jelly and install it onto the direct clutch.
NOTE:  Make sure that the lugs

Page 4198 of 6020

ISUZU KB P190 2007  Workshop Repair Manual UNIT REPAIR (AW30–40LE) 7A4–63
Forward Clutch Asseembly (C-1)
Disassembled View
RTW77ALF001001
EndOFCallout
Legend(1) Race 
(2) Thrust bearing
(3) Oil seal ring 
(4) Forward clutch drum 
(5) O-rin

Page 4199 of 6020

ISUZU KB P190 2007  Workshop Repair Manual 7A4–64 UNIT REPAIR (AW30–40LE)
Disassembly
Remove forward clutch assembly from direct clutch 
assembly.
248RY00039
1. Place wooden blocks, etc. to prevent forward clutch shaft from touching the wo

Page 4200 of 6020

ISUZU KB P190 2007  Workshop Repair Manual UNIT REPAIR (AW30–40LE) 7A4–65
5. Place special tool on the spring retainer andcompress the return spring. 
Using snap ring pliers, remove the snap ring.
Spring compressor : 5-8840-0254-0
248RY000