Specifications
• At this point tighten the rocker arm nuts for cyl-
inder # 2–3–4–5. Torque nuts to 27 N·m (20 ft. lbs.).
• Slowly rotate the crankshaft 90° clockwise or
counterclockwise, then tighten the rocker arm nuts
for cylinder # 1. Torque nuts to 27 N·m (20 ft. lbs.).
(4) Install the cylinder head cover. Refer to cylin-
der head cover removal and installation in this
group.
(5) Evacuate and charge the air conditioning sys-
tem. Refer to Group 24, Heater and Air Conditioning.
(6) Connect the negative battery cable.
VALVE SPRINGS
This procedure can be done with the engine cylin-
der head installed on the block. Each valve spring is
held in place by a retainer and a set of conical valve
locks. The locks can be removed only by compressing
the valve spring.
REMOVAL
(1) Disconnect the negative battery cable.
(2) Remove the cylinder head cover. Refer to cylin-
der head cover removal and installation in this sec-
tion.
(3) Remove the rocker arms assemblies and push
rods. Refer to rocker arm and push rod removal and
installation in this section. Retain the push rods, and
rocker arms assemblies in the same order and posi-
tion as removed.
(4) Inspect the springs and retainer for cracks and
possible signs of weakening.
(5) Install an air hose adaptor in the fuel injector
hole.
(6) Connect an air hose to the adapter and apply
air pressure slowly. Maintain at least 621 kPa (90
psi) of air pressure in the cylinder to hold the valves
against their seats.
(7) Tap the retainer or tip with a rawhide hammer
to loosen the lock from the retainer. Use Valve Spring
Compressor Tool to compress the spring and remove
the locks.
(8) Remove the valve spring and retainer.
(9) Inspect the valve stems, especially the grooves.
An Arkansas smooth stone should be used to remove
nicks and high spots.
INSTALLATION
(1) Install the valve spring and retainer.
(2) Compress the valve spring with Valve Spring
Compressor Tool and insert the valve locks. Release
the spring tension and remove the tool. Tap the
spring from side-to-side to ensure that the spring is
seated properly on the engine cylinder head.
(3) Disconnect the air hose. Remove the adaptor
from the fuel injector hole and install the fuel injec-
tor.
Fig. 52 Rocker Arm Retaining Nut
Fig. 53 Rocker Arm Assemblies
WJ ENGINE 9 - 31
REMOVAL AND INSTALLATION (Continued)