Cylinder Head - Jeep cherokee 2000 Service Manual

9 - 38 2.5L ENGINE
REMOVAL AND INSTALLATION (Continued)
(9) Install the engine cylinder head cover.

CYLINDER HEAD

This procedure can be done with the engine in or
out of the vehicle.
REMOVAL
(1) Disconnect negative cable from battery.
WARNING: DO NOT
BLOCK DRAIN PLUGS OR LOOSEN THE RADIATOR
DRAIN COCK WITH THE SYSTEM HOT AND PRES-
SURIZED BECAUSE SERIOUS BURNS FROM THE
COOLANT CAN OCCUR.
(2) Drain the coolant and disconnect the hoses at
the engine thermostat housing. DO NOT waste reus-
able coolant. If the solution is clean and is being
drained only to service the engine or cooling system,
drain the coolant into a clean container for reuse.
(3) Remove the air cleaner assembly.
(4) Remove the engine cylinder head cover. (Refer
to procedure in this section)
(5) Remove the capscrews, bridge and pivot assem-
blies and rocker arms (Fig. 55).
(6) Remove the push rods (Fig. 55). Retain the
push rods, bridges, pivots and rocker arms in
the same order as removed.
(7) Loosen the accessory drive belt at the power
steering pump bracket, if equipped or at the idler
pulley bracket (refer to Group 7, Cooling System for
the proper procedure).
(8) If equipped with air conditioning, perform the
following:
(a) Remove the bolts from the A/C compressor
mounting bracket and set the compressor aside.
(b) Remove the
bracket bolts from the engine cylinder head.
(c) Loosen the through bolt at the bottom of the
bracket.
(9) If equipped, disconnect the power steering
pump bracket. Set the pump and bracket aside. DO
NOT disconnect the hoses.
(10) Perform fuel
(Refer to Group 14, fuel systems for proper proce-
dures).
(11) Remove the latch clip and disconnect the fuel
supply hose.
(12) Remove the intake and engine exhaust mani-
folds from the engine cylinder head (refer to Group
11, Exhaust System and Intake Manifold for the
proper procedures).
(13) Number and disconnect the ignition wires and
remove the spark plugs.
(14) Disconnect the coolant temperature sending
unit connector.
(15) Remove the engine cylinder head bolts.
REMOVE THE CYLINDER
air conditioner compressor
pressure release procedure
Fig. 55 Rocker Arm Assembly
1 – CAPSCREWS
2 – BRIDGE
3 – PIVOT ASSEMBLY
4 – PUSH RODS
5 – ROCKER ARMS
(16) Remove the engine cylinder head and gasket
(Fig. 56).
(17) If this was the first time the bolts were
removed, put a paint dab on the top of the bolt. If the
bolts have a paint dab on the top of the bolt or it
isn't known if they were used before, discard the
bolts.
(18) Stuff clean lint free shop towels into the cyl-
inder bores.
NOTE: If valves, springs, or seals are to be inspect-
ed/replaced at this time, refer to Valves and Valve
Springs later in this section for proper inspection
procedures.
INSTALLATION
The engine cylinder head gasket is a composition
gasket. The gasket is to be installed DRY. DO NOT
use a gasket sealing compound on the gasket.
If the engine cylinder head is to be replaced and
the original valves used, measure the valve stem
diameter. Only standard size valves can be used with
a service replacement engine cylinder head unless
the replacement head valve stem guide bores are
reamed to accommodate
Remove all carbon buildup and reface the valves.
XJ
oversize valve stems.