Balance Shaft Removal; Piston And Connecting Rod Removal - GMC T Series 1994 Repair Manual

34. NUT
35. STUD
36. KEY
37. GEAR, BALANCE SHAFT DRIVE
38. SPROCKET, CRANKSHAFT
39. BOLT
40. SPROCKET, CAMSHAFT
41. CHAIN, TIMING
Figure 14— Removing Crankshaft Sprocket
Figure 15— Removing Camshaft
B. Pull the camshaft out from the block being care­
ful to prevent damage to the camshaft bearings.
Figure 13— Camshaft and Components
J 5825-A
9

BALANCE SHAFT REMOVAL

Remove or Disconnect (Figure 16)
Tools Required:
J 38834 Balance Shaft Bearing Service Kit
J 26941 Bearing Remover
1. Bolt (49).
2. Driven gear (42).
3. Retainer bolts (48).
4. Retainer (43).
5. Balance shaft (47) using a soft faced hammer (fig­
ure 16).
6. Balance shaft rear bearing (45) using J 38834 and
J 26941.
Important
• The balance shaft with front bearing are serviced
as an assembly.
• Use only the correct tools for bearing and shaft
installation.
• Inspect the balance shaft driven gear and the drive
gear for nicks and burrs.
PISTON AND CONNECTING
ROD REMOVAL
Remove or Disconnect (Figures 17 and 18)
Tools Required:
J 5239 Guide Set
J 24270 Ridge Reamer
1. Ridge or deposits from the upper end of the cylin­
der bores as follows:
A. Rotate the crankshaft until the piston is at BDC.
B. Place a cloth on top of the piston.
C. Perform the cutting operation with a J 24270
Ridge Reamer.
D. Rotate the crankshaft until the piston is at TDC.
E. Remove the cloth and cuttings.
F. Repeat this procedure
V2629
each piston.
for