Common Specs & Procedures Index
EXPRESS/SAVANA COMMON SPECS & PROCEDURES
| SYSTEM | SPECIFICATION/PROCEDURE | ||
|---|---|---|---|
| Air Conditioning | |||
| Service | Approximate Fluid Capacities | ||
| Torque | Fastener Specifications | ||
| Battery | Battery Inspection/Test , or Battery Electrical Drain/Parasitic Load Test | ||
| Brakes | |||
| Bleeding Sequence | RIGHT REAR, LEFT REAR, RIGHT FRONT, LEFT FRONT See Hydraulic Brake System Bleeding (Manual) , or Hydraulic Brake System Bleeding (Pressure) |
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| Disc Brakes | |||
| Service Specifications | Disc Brake Component Specifications | ||
| Torque | Fastener Specifications | ||
| Charging | |||
| Generator | Generator Replacement (LWN)Generator Replacement (LV1 with K68) , or Generator Replacement (LV1 with KW5/KG4) , or Generator Replacement (L96, LC8) | ||
| Torque | Fastener Specifications | ||
| Drive Belts | |||
| Adjustment | Serpentine belt used, not adjustable | ||
| Drive Belt Routing | 2.8L Diesel See the figure under Drive Belt Replacement 4.3L See the figure under Drive Belt Replacement - Accessory 6.0L See the figure under Drive Belt Replacement - Accessory |
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| Engine Cooling | |||
| General Service Specifications | Specifications | ||
| Radiator Cap Pressure | Pressure stamped on radiator cap or Surge Tank Cap | ||
| Thermostat R & I | |||
| 2.8L Diesel | Engine Coolant Thermostat Replacement (LWN) | ||
| 4.3L | Water Pump Inlet Replacement (LV1) | ||
| 6.0L | Engine Coolant Thermostat Housing Replacement (L96, LC8) | ||
| Water Pump R & I | |||
| 2.8L Diesel | Water Pump Replacement (LWN) | ||
| 4.3L | Water Pump Replacement (LV1) | ||
| 6.0L | Water Pump Replacement (L96, LC8) | ||
| Engine Mechanical | |||
| 2.8L Diesel | |||
| Compression | Engine Compression Test
NOTE:
The minimum compression in any one cylinder is 2069 kPa (300 psi). There should not be more than 345 kPa (50 psi) difference between a suspect cylinder and the average compression of all 4 cylinders.
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| Oil Pressure | Minimum - Warm - @ Idle - 70 kPa (10 psi) Oil Pressure - Minimum - @ 3800 RPM - 250 kPa (36 psi) |
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| Overhaul | Engine Mechanical Specifications | ||
| Torque | Fastener Specifications | ||
| 4.3L | |||
| Compression | Engine Compression Test
NOTE:
The minimum compression in any 1 cylinder should not be less than 70 percent of the highest cylinder. No cylinder should read less than 690 kPa (100 psi).
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| Oil Pressure - Minimum - Hot | 152 kPa at 1000 engine RPM (22 psig at 1000 engine RPM) 207 kPa at 2000 engine RPM (30 psig at 2000 engine RPM) 228 kPa at 3000 engine RPM (33 psig at 3000 engine RPM) |
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| Overhaul | Engine Mechanical Specifications (LV1) | ||
| Torque | Fastener Specifications | ||
| 6.0L | |||
| Compression | Engine Compression Test
NOTE:
The minimum compression in any 1 cylinder should not be less than 70 percent of the highest cylinder. No cylinder should read less than 690 kPa (100 psi).
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| Oil Pressure - Minimum - Hot | 152 kPa at 1000 engine RPM (22 psig at 1000 engine RPM) 207 kPa at 2000 engine RPM (30 psig at 2000 engine RPM) 228 kPa at 3000 engine RPM (33 psig at 3000 engine RPM) |
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| Torque | Fastener Specifications | ||
| Fluid Specifications | See FLUIDS under MAINTENANCE/FLUIDS tab. From within Manager or Service Writer, click the "30/60/90 Interval" or "Maint." button. | ||
| Flywheel/Flex Plate/Drive Plate Torque - 2.8L Diesel | Automatic Transmission Flex Plate Bolt 1st Pass - 50 N.m (37 lb ft) 2nd Pass - Loosen 90 Degrees 3rd Pass - 25 N.m (18 lb ft) Final Pass - Tighten 60 Degrees |
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| Flywheel/Flex Plate/Drive Plate Torque - 4.3L | First Pass 15 N.m (11 lb ft) Second Pass 30 N.m (30 lb ft) Final Pass additional 45 degrees |
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| Flywheel/Flex Plate/Drive Plate Torque - 6.0L | First Pass 20 N.m (15 lb ft) Second Pass 50 N.m (37 lb ft) Final Pass 100 N.m (74 lb ft) |
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| Fuel System | |||
| Pressure Specification And Test Procedure | 2.8L Diesel See Fuel System Diagnosis 4.3L Fuel System Diagnosis 6.0L Fuel System Diagnosis (Without FPCM) , or Fuel System Diagnosis (FPCM) |
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| Fuel Filter Location | 2.8L Diesel See figure under Fuel Filter Replacement 4.3L Fuel filter is part of the fuel tank fuel pump module 6.0L Fuel filter is part of the fuel tank fuel pump module |
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| Fuel Filter R & I | 2.8L Diesel See Fuel Filter Replacement 4.3L Fuel Tank Fuel Pump Module Replacement (Short/Long Wheel Base) , or Fuel Tank Fuel Pump Module Replacement (Chassis Cab Front Tank) , or Fuel Tank Fuel Pump Module Replacement (Chassis Cab Rear Tank) 6.0L Fuel Tank Fuel Pump Module Replacement (Passenger/Cargo) , or Fuel Tank Fuel Pump Module Replacement (Chassis Cab, Front Tank) , or Fuel Tank Fuel Pump Module Replacement (Chassis Cab, Rear Tank) |
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| Ignition | |||
| Firing Order & Cylinder Identification | Firing Order & Cylinder Identification | ||
| Ignition Wires (Resistance) | 4.3L 170-220 Ω per 25.4 mm (1.0 in) 6.0L 170-220 Ω per 25.4 mm (1.0 in) |
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| Ignition Wires (Routing) | |||
| 4.3L & 6.0L | Straight down to spark plug. See figures under Spark Plug Wire Replacement (4.3L) , or Spark Plug Wire Replacement (6.0L) | ||
| Spark Plug | |||
| 4.3L & 6.0L (Refer to Electronic Parts Catalogue) | |||
| Gap | 0.95-1.10 mm (0.037-0.043 in) | ||
| Torque | 4.3L 20 N.m (15 lb ft) 6.0L Used Head: 15 N.m (11 lb ft) New Aluminum Head: 20 N.m (15 lb ft) New Iron Head: 30 N.m (22 ft lb) |
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| Starting | |||
| Starter | N/A | ||
| Torque | Fastener Specifications | ||
| Wheel Alignment | |||
| Adjustment Specifications | Wheel Alignment Specifications | ||
| Torque | Fastener Specifications | ||
| Wheel & Tire | |||
| Wheel Lug Nut Torque | 190 N.m (140 lb ft) For tightening sequence, please see the Wheel Nut Tightening Sequence figure under Tire and Wheel Removal and Installation (Without Dual Rear Wheels) , or Tire and Wheel Removal and Installation (With Dual Rear Wheels) |
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