Cylinder Bore - GMC T Series 1994 Repair Manual

SECTION A-A
45. BEARING
47. BALANCE SHAFT
86. CUP PLUGS
87. PLUG
88. PLUG
89. CUP PLUGS
90. PLUG
A. Feeler Gage
B. Straight Edge
Figure 23— Inspecting the Block
C. If the gap is found to be greater than 0.05 mm
(0.002 in.) within 152 mm (6 inches) at any
sealing location, the block must be replaced.
D. If the gap is found to be less than 0.05 mm
(0.002 in.) within 152 mm (6 inches) at any
sealing location and a cause for leakage is sus­
pected, then the minor irregularities may be
carefully machined from the block.
89
6. Oil pan, timing cover, and intake manifold mounting
surfaces for nicks. Minor irregularities may be
cleaned up with a flat file.

CYLINDER BORE

L*
Inspect
Cylinder bores for scoring or other damage.
Measure
Cylinder bore taper and out-of-round. Refer to
SECTION 6A.
Cylinder Bore Reconditioning
Refer to SECTION 6A.
|-»4-| Install or Connect
NOTICE: For steps 2, 4, 5, and 6 refer to "No­
tice" on page 6A4-1.
1. Front oil gallery plugs (86).
• Coat plug outside diameter with sealant (GM
P/N 1052080 or equivalent).
2. Rear oil gallery plugs (87, 88, and 90).
V3293
• Plug (87) to 18 N-m (13 lbs. ft.).
• Plug (88) to 24 N-m (18 lbs. ft.).
• Plug (90) to 31 N-m (23 lbs. ft.).
V0578