Reaming Camshaft Bearings
NOTE:
Make sure that cutting tool is kept clear of cuttings at all times. Cutting tool should be removed from bearing half way through the cut and cuttings removed. Feed reamer very slowly and keep cutters dry. Arbor should be lightly lubricated before assembling cutters and pilots. Clean thoroughly when operation is completed.
- Insert suitable taper pilots (18G 123AT and 18G 123BA) into center and rear bearings respectively. Place suitable parallel pilot (18G 123AQ) on arbor, followed by suitable cutter (18G 123AN).
- Thread arbor through front and center bearings, place suitable cutter (18G 123AP) on arbor, and thread arbor through taper pilot in rear bearing. Secure cutters and pilots in respective positions. Cutter (18G 123AN) should be located in No. 10, and cutter (18G 123AP) should be located in No. 7 on arbor.
- Cutter for front bearing will cut first with arbor piloting in center and rear bearings. Cutter for rear liner will follow with arbor piloting in front and center bearings. Clear away all cuttings before plain pilot is allowed to enter front bearing. When cut in rear bearing is finished, free cutters and remove arbor.
- To ream center bearing, insert suitable pilots (18G 123BC and 18G 123BB) in front and rear bearings. Thread arbor through pilot in front bearing and place cutter for center bearing on arbor. Thread arbor through center bearing and pilot located in rear bearing.
- Secure cutter and pilot in position. Suitable adaptor (18G 123B) should be located in No. 7 position on arbor. Ream center bearing, release cutter, remove arbor.
VALVE TIMING
| Engine | INTAKE | EXHAUST | ||
|---|---|---|---|---|
| Open (BTDC) | Close (ALDC) | Open (BLDC) | Close (ATDC) | |
| All Engines | 5° | 45° | 51° | 21° |