Hyster D024 - Assemble and Install

1. VALVE STEM KEYS
2. VALVE SPRING CAP
3. VALVE SPRING
4. VALVE
5. VALVE STEM OIL SEAL
6. CYLINDER HEAD
Figure 9. Valve Component Cleaning
3.
Clean valve guides.
Assemble and Install
1.
Using GM tool J-42073 (Hyster P/N 4622265),
install oil seal in lower groove. Install shim,
damper, spring, shield, and cap or rotator. Us-
ing a spring compressor, compress assembly
and install retainers. Measure height of valve
spring as shown in Figure 13. Measure from top
of shim to top of retainer cap. Install shims to
get correct height shown in Figure 10. The in-
stalled height of valve spring must not be less
than minimum height.
NOTE:
THIS LIST IS FOR 4.3L GASOLINE EN-
GINES.
A. VARIATION FROM VERTICAL: LESS THAN
1.6 mm (0.063 in.)
B. FREE LENGTH: 51.3 mm (2.02 in.)
C. SPRING COMPRESSED TO 338 TO 374 N (76
TO 84 lbf) AT 43.2 mm (1.70 in.) CLOSED
SPRING COMPRESSED TO 832 TO 903 N (187
TO 203 lbf) AT 32.3 mm (1.27 in.) OPEN
D. INSTALLED HEIGHT INTAKE: 42.92 TO
43.43 mm (1.670 TO 1.700 in.) EXHAUST: 42.92
TO 43.43 mm (1.670 TO 1.700 in.)
NOTE: THIS LIST IS FOR 4.3L LPG ENGINES.
A. VARIATION FROM VERTICAL: LESS THAN
1.6 mm (0.063 in.)
B. FREE LENGTH: 50 mm (2.0 in.)
C. SPRING COMPRESSED TO 265 N (59.5 lbf) AT
43.2 mm (1.70 in.) CLOSED SPRING COM-
PRESSED TO 718 N (161.5 lbf) AT
32.3 mm (1.27 in.) OPEN
D. INSTALLED HEIGHT INTAKE: 42.92 TO
43.43 mm (1.670 TO 1.700 in.) EXHAUST: 42.92
TO 43.43 mm (1.670 TO 1.700 in.)
Figure 10. Valve Spring Specifications
Cylinder Head Repair 0600 SRM 1251
8