water pump NISSAN PICK-UP 1999 Repair Manual

V1Upper timing chain tensioner
V2Cam sprocket
V3Upper timing chain
V4Water pump
V5Water pump pulley
V6Crankshaft pulley
V7Front oil seal
V8Front cover
V9Camshaft sprocket cover
V10Oil slinger
V11Oil pump drive gear
V12Lower timing chain
V13Crankshaft sprocket
V14Chain guide
V15Idler sprocket
V16Chain tension arm
V17Lower timing chain tensioner
SEM994F
TIMING CHAINKA24DE
EM-2013

CAUTION:
lWhen installing sliding parts (bearings, pistons, etc.),
lubricate contacting surfaces with new engine oil.
lPlace removed parts such as bearings and bearing caps
in their proper order and direction.
lWhen installing connecting rod nuts and main bearing
cap bolts, apply new engine oil to threads and seating
surfaces.
lDo not allow any magnetic materials to contact the ring
gear teeth of flywheel or drive plate.
Disassembly
PISTON AND CRANKSHAFT
1. Place engine on a work stand.
2. Drain coolant and oil.
3. Remove oil pan.
4. Remove timing chain. Refer to ªRemovalº in ªTIMING
CHAINº (EM-2015).
5. Remove water pump.
6. Remove cylinder head.
7. Remove pistons with connecting rods.
8. Remove bearing caps and crankshaft.
lBefore removing bearing caps, measure crankshaft end
play. Refer to EM-2047.
lBolts should be loosened in two or three steps.
Inspection
PISTON AND PISTON PIN CLEARANCE
1. Measure inner diameter of piston pin hole ªdpº.
Standard diameter ªdpº:
20.993 - 20.999 mm (0.8265 - 0.8267 in)
2. Measure outer diameter of piston pin ªDpº.
Standard diameter ªDpº:
20.989 - 21.001 mm (0.8263 - 0.8268 in)
3. Calculate piston pin clearance.
dp þ Dp = þ0.002 to 0.01 mm (þ0.0001 to 0.0004 in)
If it exceeds the above value, replace piston assembly with
pin.
SEM744-C
EEM118
AEM023
AEM024
CYLINDER BLOCKKA24DE
EM-2039