1674 DIESEL TRUCK ENGINE Caterpillar


Fuel Injection Equipment

Usage:

Firing order (injection sequence) ... 1, 5, 3, 6, 2, 4

Injection timing before TC (top center):

Engines 94B1-94B3471 ... 8°

Engines 94B3472-Up ... 6°

(1) Torque for bushing ... 150 ± 10 lb. ft.(20.7 ± 1.4 mkg)

(2) Thickness of spacers:

5M2697 Spacer ... .170 in.(4.32 mm)

2M4208 Spacer ... .174 in.(4.42 mm)

2M4209 Spacer ... .178 in.(4.52 mm)

2M4210 Spacer ... .182 in.(4.62 mm)

2M4211 Spacer ... .186 in.(4.72 mm)

2M4212 Spacer ... .190 in.(4.82 mm)

5M2691 Spacer ... .194 in.(4.93 mm)

5S7189 Spacer ... .198 in.(5.03 mm)

(3) 1S7590 Spring:

Length under test force ... 1.522 in.(38.66 mm)

Test force ... 22.6 ± 1.1 lbs.(10.25 ± 5 kg)

Free length after test ... 1.751 in.(44.47 mm)

Outside diameter ... .995 in.(25.27 mm)

(4) Timing dimension for the fuel injection pumps:

On engine with 8S7167 Gauge (A) ... 4.355 ± .002 in.(110.62 ± 0.05 mm)

Off engine with 8S7167 Gauge (A) ... 4.392 ± .002 in.(11.56 ± 0.05 mm)

(5) Length of pump plunger ... 2.7212 ± .0015 in.(69.118 ± 0.038 mm)

Minimum permissible length ... 2.7147 in.(68.953 mm)

(6) Bore in the bearings for the rack:

Bearing at the rear (later) ... .5020 ± .0015 in.(12.751 ± 0.038 mm)

Bearing at the front (later) ... .5023 ± .0015 in.(12.758 ± 0.038 mm)

Both bearings (earlier) ... .5010 ± .0003 in.(12.725 ± 0.008 mm)

Diameter of fuel rack ... .4983 to .4987 in.(12.656 to 12.666 mm)

Maximum permissible clearance between rack and bearings ... .005 in.(0.13 mm)

(7) Bore in bearings for the camshaft ... 2.1245 to 2.1255 in.(53.962 to 53.987 mm)

Diameter of bearing journals of the camshaft ... 2.1215 to 2.1225 in.(53.886 to 53.911 mm)

Maximum permissible clearance between the bearings and the camshaft journals ... .010 in.(0.25 mm)

(8) Torque for the nuts that hold the fuel lines ... 30 ± 5 lb. ft.(4.1 ± 0.7 mkg)

(9) Torque for the nuts that hold the nozzles ... 55 ± 5 lb. ft.(7.6 ± 0.7 mkg)

(10) Body

(11) Tighten nozzle finger tight in body.

(12) Torque for glow plug ... 120 ± 24 lb. in.(138.4 ± 27.6 cm.kg)

(13) Torque for precombustion chamber ... 150 ± 10 lb. ft.(20.7 ± 1.4 mkg)

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