Thermostat Housing Removal; Water Pump Removal; Valve Train Component Removal - Chevrolet 1988 Light Duty Truck Repair Manual

47. W ater Pum p B ypass Hose
50. T h e rm o s ta t H o u sin g
54. W ater O u tle t
171. W ater Pum p
Figure 11— Therm ostat Housing and W ater Pump
Installed
• Remove the heat stove (191).
2. PCV hose.
3. Bolts (35), nuts (30), washers (29) and clam ps (34).
4. Intake manifold (31) and exhaust manifold (37) as an
assembly.
5. Gasket (27).
THERMOSTAT HOUSING
REMOVAL
0 R em o ve or D isco nn ect (F ig u res 4 and 11)
1. Bolts (51).
2. Therm ostat housing (50).
3. Gasket (49).

WATER PUMP REMOVAL

I* " *| R em o ve or D isco nn ect (F ig u re s 5 and 11)
1. Bolts (170).
2. Water pump (171).
3. Gasket (169).
A. 22 mm (7/s" )
B. 55 mm (2-1/s" )
C. 40 mm (I-V
D. 10 mm (3/8" )d rill
25 m m (1" )deep
H ole s fo r P ushrods
E. 22 mm (7/s" ) d rill
25 mm (1" )deep
H oles fo r Valve
L ifte rs
F. 50 mm x 155 mm
(2" x 6 " ) L um be r
G. 50 mm (2" ) pegs fo r
R ocker A rm s
and B a lls
B-05061
Figure 12— Valve Train Com ponent Rack
COMPONENT REMOVAL
I+ + I R em ove o r D is c o n n e ct (F ig u re s 3, 4, 12, 13,
and 14)
Tools Required:
J-3049 Valve Lifter Remover (Plier Type)
J-9290-01 Valve Lifter Remover
(Slide Ham m er Type)
4.8 LITER L6 6A4-9
" > o
w
" )
2
VALVE TRAIN
F-04942