Jeep Cherokee 2000 Service Manual - page 1493
Inspect the valves and plugs for scratches, burrs,
nicks, or scores. Also inspect the coating on the alu-
minum valves and plugs (Fig. 223). If the coating is
damaged or worn through, the valve (or valve body)
should be replaced.
Aluminum valves and plugs should not be sanded
or polished under any circumstances. However, minor
burrs or scratches on steel valves and plugs can be
removed with crocus cloth but do not round off the
valve or plug edges. Squareness of these edges is
vitally important. These edges prevent foreign matter
from lodging between the valves, plugs and bore.
Inspect all the valve and plug bores in the valve
body. Use a penlight to view the bore interiors.
Replace the valve body if any bores are distorted or
scored. Inspect all of the valve body springs. The
springs must be free of distortion, warpage or broken
coils.
Trial fit each valve and plug in its bore to check
freedom of operation. When clean and dry, the valves
and plugs should drop freely into the bores. Valve
body bores do not change dimensionally with use. If
the valve body functioned correctly when new, it will
continue to operate properly after cleaning and
inspection. It should not be necessary to replace a
valve body assembly unless it is damaged in han-
dling.
Fig. 220 Park Sprag, Shaft And Spring
1 – SPRAG SHAFT
2 – PARALLEL JAW SNAP RING PLIERS
3 – SPRAG
4 – SPRING
Fig. 221 Park Sprag Reaction Plug And Spring
Location
1 – SPRING CLIP
2 – REACTION PLUG
Fig. 222 Correct Position Of Sprag And Spring
1 – SPRAG SHAFT
2 – SPRAG LOCKING LUG
3 – SPRING
XJ
AUTOMATIC TRANSMISSION—30RH
21 - 193
CLEANING AND INSPECTION (Continued)