TRUCK SERVICE MANUAL
ENGINE
Service Tools (or Equivalent) Required
CYLINDER HEAD
Service
Tool
DISASSEMBLY AND TESTING
Tool Number
Name
1. Use ST-448 or other suitable valve spring
ST-257
Valve Seat Insert Tool
compressor,
compress valve springs, remove half
ST-417 or
Valve Vacuum Tester
collets, retainers, springs, valve spring guides and
ST-417-A
Valve Vacuum Tester
valves. If used, remove intake valve oil seals and
ST-646
Valve Guide Reamer
discard.
ST-662
Valve Seat Insert Cutter Set
ST-663
Valve Guide Arbor Set
2. Place valves on a numbered valve board for
ST-684
Valve Facing Machine
inspection.
ST-685
Valve Seat Grinding Machine
ST-788
Bead Cutting Tool
Pressure Testing
ST-880
Injector Sleeve Expander
ST-884
Injector Sleeve Cutter
Install ST-1179 or equivalent Injector Sleeve Holding
ST-913
Cylinder Head Grooving Tool
Tool (Fig. 2-2) or a scrap injector assembly in each
ST-1010
Water Hole Counterboring
injector sleeve. Tighten tool or injector hold-down
Tool
capscrews to 10 to 12 ft-lbs [1.4 to 1.7 kg ml torque to
ST-1012
Hydrostatic Tester
ST-1013
Hydrostatic Tester Base Plate
seal lower end of injector sleeve and place cylinder head
ST-1034
Dowel Pin Extractor
in ST-1012 Hydrostatic Tester (Fig. 2-3) or equivalent.
ST-1142
Spark Plug Sleeve Seat Facing
Tool (Natural Gas Engines)
ST-1179
Injector Sleeve Holding Tool
ST-1217
Valve Guide Mandrel
ST-1227
Injector Sleeve Installation
ST-1257
Vacuum Tester
Desirable (Or Equivalent) Service Tools
ST-448
Valve Spring Compressor
ST-547
Gauge Block
ST-583
Head Holding Fixture
ST-633
Crosshead Guide Mandrel
ST-876
Cleaning Brush
ST-890
Spark Plug Adapter Wrench.
ST-981
Injector Tip Protrusion
Checking Tool
ST-1022
Valve Spring Compressor
Fig. 2-2 (N10278) ST-1179 Injector sleeve holding tool
Stand (Used with multiple
compressor plate).
Air Test
ST-1026
Valve Spring Compressor
Plate (Compress 8 springs in
Use hoist or suitable lifting device to position head and
one operation).
tester over water tank, connect air line with quick
ST-1122
Staking Tool Driver
coupler, apply 20 to 30 psi [1.4 to 2.1 kg/sq cm] air
ST-1124
Valve Seat Insert Staking Tool
pressure. Submerge head in water deep enough to
ST-1133
Valve Seat Extractor
cover entire head. Check carefully around valve seats
ST-1166
Magnetic Crack Detector
and injector sleeve for cracks. Discard head if cracked;
ST-1187
Valve Guide Reamer 0.015
replace leaking sleeves.
inch [0.38 mm] Oversize
ST-1188
Valve Guide Reamer 0.010
inch [0.25 mm] Oversize
Water Test
ST-1244
Injector Sleeve Puller
ST-1247
Injector Sleeve Puller Impact
1. Test cylinder head for leaks at 35 to 85 psi [2.46
Wrench Socket
to 5.98 kg/sq cm] water pressure with water at 180 to
200 deg. F [82 to 93 deg. C] if possible. Check
Standard Tools-Obtain Locally
carefully around valve seats and injector sleeve for
0-1 Micrometers
cracks even though such cracks
Small Bore Gauge
Vernier Depth Gauge
353
