Injection Pump Timing
- Ensure line on injection pump flange is aligned with line on injection pump front bracket. Bring piston in No. 1 cylinder to TDC of compression stroke. With timing belt cover removed, ensure timing belt is properly tensioned and timing marks are aligned.
- Disconnect injection pipe from pump. Remove distributor head screw and gasket. Install Dial Indicator (J 28827) on pump. Adjust lift to approximately .04" (1 mm). Bring piston in No. 1 cylinder to 45-60 degrees BTDC.
Courtesy of ISUZU MOTOR CO.
- Calibrate dial indicator to zero. Turn crankshaft (in direction of normal rotation) until 15 degrees BTDC (13 degrees BTDC for Calif. models) notch on damper pulley is in alignment with pointer. Read dial indicator.
- Dial indicator reading must be .020" (.5 mm). If reading is not within specifications, hold crankshaft at 15 degrees BTDC (13 degrees BTDC for Calif. models). Loosen nuts on injection pump flange. Move injection pump until dial indicator reading is .020" (.5 mm).