Dodge RAM TRUCK 1500 1995 Service Manual page 993

9 - 152 5.9L (DIESEL) ENGINE
B R
FUEL TEMPERATURE SENSOR
ELECTRICAL
CONNECTOR
FUEL
HEATER
EL
TRANSFER
PUMP
J9414-94
Fig. 4 Fuel/Water Separator Filter
J9109-36
Fig. 5 Cylinder Head Bolt Removal Sequence-
Cylinder Head Hot
Inspect the block and head surface for nicks, ero­
sion, etc.
Check the head distortion (Fig. 7). The distortion of
the combustion deck face is not to exceed 0.010 m m
(0.0004 inch) i n any 50.8 m m (2.00 inch) diameter.
Overall v a r i a t i o n end to end or side to side 0.30 m m
(0.012 inch).
DO N O T proceed w i t h the in-chassis overhaul i f
the cylinder head or block surface is damaged or not
flat ( w i t h i n specifications).
R E F A C I N G H E A D S U R F A C E
The cylinder head combustion deck m a y be refaced
i n whatever increments necessary to clean up the
surface and m a i n t a i n the surface finish and flatness
tolerances. The combined t o t a l of stock removed m u s t
not exceed 1.00 m m (0.03937 inch). The amount of
M I N . 102.0 mm (4.0157 inch)
M A X . 102.116 m m (4.0203 inch)
Out-of-Round 0.038 mm (0.0015 inch)
Taper 0.76 mm (0.003 inch)
Oversize pistons and rings are
available for bored cylinder blocks.
J9109-75
Fig. 6 Cylinder Bore Diameter
STRAIGHT
EDGE
FEELER
GAUGE
J9109-157
Fig. 7 Cylinder Head Combustion Deck Face
Measurement
stock removed each t i m e m u s t be steel stamped
above combustion deck edge, on the lower r i g h t hand
corner of the rear face (Fig. 8). Check valve p r o t r u ­
sion after head surface refacing.
Surface finish requirements are 1.5-3.2 microme­
ters (60-126 microinch).
CLEANING
Clean the carbon from the injector nozzle seat w i t h
a nylon or brass brush.
Scrape the gasket residue from all gasket surfaces.
Wash the cylinder head i n hot soapy water solution
(88°C or 140°F).
A f t e r rinsing, use compressed a i r to d r y the cylin­
der head.
Polish the gasket surface w i t h 400 g r i d paper. Use
an orbital sander or sanding block to m a i n t a i n a flat
surface.