Rocker Arm Stud Replacement - GMC G Service Manual

Figure 10 — Removing the Hydraulic Lifter
Figure 11 — Removing the Hydraulic Lifter
H Install or Connect
1. Hydraulic lifters to the block. Lubricate the lifter foot
and body with Engine Oil Supplement or equivalent.
] Important
• When a new camshaft or any new hydraulic
lifters are installed, change the engine oil and
filter. Engine Oil Supplement (or equivalent)
should be added to the crankcase oil.
• Replace all of the hydraulic lifters when a new
camshaft is installed.
2. Intake Manifold. Refer to "Intake Manifold Replace­
ment" in this section.
3. Pushrod. Refer to "Rocker Arm and Pushrod
Replacement" in this section.
I ^ l Adjust
• Valves. Refer to "Valve Adjustment" in this
section.
SMALL BLOCK 6A4-11
4. Rocker arm cover. Refer to "Rocker Arm Cover
Replacement" in this section.
ROCKER ARM STUD
REPLACEMENT
R Remove or Disconnect (Figure 12)
Tool Required:
J 5802-01 Rocker Arm Stud Remover
1. Rocker arm cover. Refer to "Rocker Arm Cover
Replacement" in this section.
2. Rocker arm. Refer to "Rocker Arm and Pushrod
Replacement" in this section.
3. Rocker arm stud.
• Place J 5802-01 over the rocker arm stud
(figure 12).
• Install a nut and flat washer.
• Turn the nut to remove the stud (figure 12).
B Install or Connect (Figures 13 and 14)
Tools Required:
J 5715 Reamer (0.003-inch oversize) or
J 6036 Reamer (0.013-inch oversize)
J 6880 Rocker Arm Stud Installer
NOTICE: Do not attempt to install an oversize
rocker arm stud without reaming the stud hole,
as this could damage the cylinder head.
• Ream the hole to the proper size for the replacement
oversize rocker arm stud. Use J 5715 for 0.003-inch
oversize studs; J 6036 for 0.013-inch oversize studs
(figure 13).
• Coat lower end (press-fit area) of rocker arm stud with
hypoid axle lubricant.
1. Rocker arm stud. Use J 6880 (figure 14). Stud is
installed to proper depth when the tool bottoms on the
cylinder head.
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