Please read thoroughly before aempting to use this manual:
Table of Contents ........................................................................................................................................... 1
Model Designation & Serial Numbers .............................................................................................................. 2
Reading a Parts Page ...................................................................................................................................... 3
**NOTE: For each cylinder, check that the mark on the
cylinder liner and the stamped mark (S, M or L)
on the top face of right side of the cylinder
block correctly coincide.
LINER MARK
BLOCK MARK LINER PART NO. Bottom Top
S 6222-23-2211 S I
M 6222-23-2221 M II
L 6222-23-2231 L III
P6108 06/02
1 - 3
GROUP 1 - ENGINE
Crankshaft Assembly
P6108 06/02
1 - 4
Figure 0231a
GROUP 1 - ENGINE
Crankshaft Assembly
KEY PART NUMBER QTY DESCRIPTION KOMATSU S/N
1 6222-35-1900 1 Crankshaft Assembly (includes key #2)Up to - 17508
6222-35-1901 1 Crankshaft Assembly
2 6222-35-1920 1 Gear Up to - 17508
6222-35-1921 1 Gear From 17509 3 6138-31-1460 1 Pin From 12825 4 6222-35-1930 1 Gear, Oil Pump Drive 5 01252-30825 3 Bolt Up to - 17508
6136-31-1240 3 Bolt Up to - 22179
01437-00830 3 Bolt From 22180 6 6138-31-1452 1 Pulley (Early Production) Up to - 12824
6A 6222-35-1940 1 Adapter (Late Production) Up to - 17508
6222-35-1941 1 Adapter (Late Production) Up to - 22179
6222-35-1942 1 Adapter (Late Production) From 22180 7 04020-01228 1 Pin (used with #6A & #10A) From 12825 8 6136-31-1431 1 Plate 9 01050-31845 1 Bolt 10 6138-31-8100 1 Damper (Early Production) Up to - 12824
10A 6151-31-8300 1 Damper (Late Production) From 12825 11 01435-01220 6 Capscrew, Hex Head Flanged, M12 x 1.75 x 20 mm 12 6221-21-8010 7 Main Bearing Assembly, Std. 6221-29-8010 7 Main Bearing Assembly, undersize 0.25 mm 6221-28-8010 7 Main Bearing Assembly, undersize 0.50 mm 6221-27-8010 7 Main Bearing Assembly, undersize 0.75 mm 6221-26-8010 7 Main Bearing Assembly, undersize 1.00 mm 13 6221-21-8050 1 Thrust Bearing Assembly, Std. -
6221-29-8050 1 Thrust Bearing Assembly, oversize 0.25 mm -
6221-28-8050 1 Thrust Bearing Assembly, oversize 0.50 mm -
6221-27-8050 1 Thrust Bearing Assembly, oversize 0.75 mm -
6221-26-8050 1 Thrust Bearing Assembly, oversize 1.00 mm -
(includes key #2)From 17509 -
P6108 06/02
1 - 5
GROUP 1 - ENGINE
Flywheel & Housing SAE #3/ #11-1/2 L6108
Figure 0221
KEY PART NUMBER QTY DESCRIPTION SERIAL NUMBER
1 6221-21-4110 1 Flywheel Housing SAE#3 2 01435-01255 2 Capscrew, Hex Head Flanged, M12 x 1.75 x 55 mm,
3 01435-01245 9 Capscrew, Hex Head Flanged, M12 x 1.75 x 45 mm,
Grade 10.9-
Grade 10.9-
5 6221-21-4510 1 Rear Seal 6221-21-4520 1 Rear Main Seal (Repair Type) 6 31-65702 1 Flywheel Assembly SAE #11-1/2
7 6221-31-4190 1 Ring Gear
(122 Teeth)-
(includes key #7)-
8 01050-31435 8 Capscrew, Hex Head M14 x 1.5 x 35 mm 9 6130-32-1361 8 Flat Washer M14 Special 10 6114-11-8910 2 Plug 11 07005-02216 2 Gasket 11A 07042-00415 1 Plug 12 09920-00150 ** Liquid Gasket LG-7 -
**As required
P6108 06/02
1 - 6
GROUP 1 - ENGINE
Flywheel & Housing SAE #1/ #14 L-M6108
Figure 0221 (ywheel6108)
KEY PART NUMBER QTY DESCRIPTION SERIAL NUMBER
1 6222-21-4111 1 Flywheel Housing SAE#1 2 07042-00415 1 Plug 3 01436-01205 2 Capscrew, Hex Head Flanged M12 x 1.75 x 105 mm,
4 01435-01255 2 Capscrew, Hex Head Flanged M12 x 1.75 x 55 mm,
5 01435-01245 9 Capscrew, Hex Head Flanged M12 x 1.75 x 45 mm,
Grade 10.9-
Grade 10.9-
Grade 10.9-
6 6221-21-4510 1 Rear Main Seal 6221-21-4520 1 Rear Main Seal
7 6221-31-4170 1 Flywheel Assembly SAE #14
8 6150-31-1351 1 Ring Gear
(Repair Type) -
(includes key #8)-
(148 Teeth)-
9 01050-31465 8 Capscrew, Hex Head M14 x 1.5 x 65 mm 10 6130-32-1361 8 Flat Washer M14 Special 11 6114-11-8910 2 Plug 12 07005-02216 2 Gasket 15 09920-00150 ** Liquid Gasket, LG-7 16 6221-21-4940 1 Adapter -
**As required
P6108 06/02
1 - 7
GROUP 1 - ENGINE
Piston & Connecting Rod L-M 6108T & A
Figure 0235
KEY PART NUMBER QTY DESCRIPTION SERIAL NUMBER
1 6222-31-2110 6 Piston 2 6221-31-2410 6 Piston Pin 3 04065-04518 12 Snap Ring 4 6221-31-2200 6 Piston Ring Set 5 6221-31-3100 6 Connecting Rod Assembly
6 6221-31-3130 1 Bushing 7 02400-10313 2 Dowel Pin 8 6221-31-3310 2 Bolt 9 6222-31-3040 6 Connecting Rod Bearing Assembly, Std. 6222-39-3040 6 Connecting Rod Bearing Assembly, undersize 0.25 mm 6222-38-3040 6 Connecting Rod Bearing Assembly, undersize 0.50 mm 6222-37-3040 6 Connecting Rod Bearing Assembly, undersize 0.75 mm 6222-36-3040 6 Connecting Rod Bearing Assembly, undersize 1.00 mm -
(includes keys #6 - #8)-
P6108 06/02
1 - 8
GROUP 1 - ENGINE
Piston & Connecting Rod L-M 6108T2 & A2
Figure 0235
KEY PART NUMBER QTY DESCRIPTION SERIAL NUMBER
1 6222-35-2150 6 Piston 2 6221-31-2410 6 Piston Pin 3 04065-04518 12 Snap Ring 4 6221-31-2200 6 Piston Ring Set 5 6222-31-3100 6 Connecting Rod Assembly
6 6222-31-3130 1 Bushing 7 02400-10313 2 Dowel Pin 8 6221-31-3310 2 Bolt 9 6222-31-3050 6 Connecting Rod Bearing Assembly, Std. 6222-39-3050 6 Connecting Rod Bearing Assembly, undersize 0.25 mm 6222-38-3050 6 Connecting Rod Bearing Assembly, undersize 0.50 mm 6222-37-3050 6 Connecting Rod Bearing Assembly, undersize 0.75 mm 6222-36-3050 6 Connecting Rod Bearing Assembly, undersize 1.00 mm -
(includes keys #6 - #8)-
P6108 06/02
1 - 9
GROUP 1 - ENGINE
Timing Cover L-M 6108
Without Accessory Drive
P6108 06/02
1 - 10
Figure 0205A
GROUP 1 - ENGINE
Timing Cover L-M 6108
Without Accessory Drive
KEY PART NUMBER QTY DESCRIPTION KOMATSU S/N
1 6222-21-3221 1 Cover Backing Plate Up to - 12824
2 6221-21-3820 1 Gasket
3 01435-00820 4 Capscrew, Hex Head Flanged M8 x 1.25 x 20 mm,
4 6221-21-3120 1 Timing Cover Up to - 12824
5 6221-21-3811 1 Gasket
6 01435-00885 2 Capscrew, Hex Head Flanged M8 x 1.25 x 85 mm,
7 01435-00895 2 Capscrew, Hex Head Flanged M8 x 1.25 x 95 mm,
8 01435-00855 8 Capscrew, Hex Head Flanged M8 x 1.25 x 55 mm,
9 01435-00865 4 Capscrew, Hex Head Flanged M8 x 1.25 x 65 mm,
12 6221-21-3910 1 Pin Up to - 12824
13 6136-22-3510 1 Front Seal
14 6144-81-5151 1 Cover Up to - 12824
6142-82-5112 1 Tachometer Drive 15 07000-03050 1 O-Ring Up to - 12824
16 01435-00612 2 Capscrew, Hex Head Flanged M6 x 1.0 x 12 mm,
16A 01435-00616 2 Capscrew, Hex Head Flanged M6 x 1.0 x 16 mm,
17 6221-21-2410 1 Idler Shaft Up to - 12824
18 6221-31-6300 1 Idler Gear Assembly
19 6221-31-6340 1 Bushing Up to - 12824
20 6221-21-2420 1 Washer Up to - 12824
21 01010-61480 1 Capscrew, Hex Head M14 x 2.0 x 80 mm Up to - 12824
22 6130-82-5260 1 Cap 23 6130-82-5270 1 Gasket -
(Formerly #6221-21-3890)Up to - 12824
Grade 10.9Up to - 12824
(Formerly #6221-21-3810)Up to - 12824
Grade 10.9Up to - 12824
Grade 10.9Up to - 12824
Grade 10.9Up to - 12824
Grade 10.9Up to - 12824
(Formerly #6136-21-3510)Up to - 12824
Grade 10.9 Up to - 12824
Grade 10.9
(includes keys #19)Up to - 12824
P6108 06/02
1 - 11
GROUP 1 - ENGINE
Timing Cover L-M 6108
With Accessory Drive
P6108 06/02
1 - 12
Figure 0205B
GROUP 1 - ENGINE
Timing Cover L-M 6108
With Accessory Drive
KEY PART NUMBER QTY DESCRIPTION KOMATSU S/N
1 6222-21-3221 1 Cover Backing Plate From 12825 2 6221-21-3820 1 Gasket
3 01435-00820 4 Capscrew, Hex Head Flanged M8 x 1.25 x 20 mm,
4 6222-25-3110 1 Timing Cover
5 6221-21-3811 1 Gasket
6 01435-00880 2 Capscrew, Hex Head Flanged M8 x 1.25 x 80 mm,
7 01436-00800 3 Capscrew, Hex Head Flanged M8 x 1.25 x 100 mm,
8 01435-00855 6 Capscrew, Hex Head Flanged M8 x 1.25 x 55 mm,
10 01435-00890 9 Capscrew, Hex Head Flanged M8 x 1.25 x 90 mm,
12 6221-21-3910 1 Pin
13 6136-22-3510 1 Front Seal
14 6144-81-5151 1 Cover
6142-82-5112 1 Tachometer Drive
15 07000-03050 1 O-Ring
16 01435-00612 2 Capscrew, Hex Head Flanged M6 x 1.0 x 12 mm,
16A 01435-00616 2 Capscrew, Hex Head Flanged M6 x 1.0 x 16 mm,
17 6221-21-2410 1 Idler Shaft
18 6221-31-6300 1 Idler Gear Assembly
19 6221-31-6340 1 Bushing
20 6221-21-2420 1 Washer
21 01010-61480 1 Capscrew, Hex Head M14 x 2.0 x 80 mm
22 6130-82-5260 1 Cap
23 6130-82-5270 1 Gasket