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Re: international b275 timing
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Posted by Joe on November 29, 2003 at 12:10:33 from (66.243.138.28):
In Reply to: international b275 timing posted by jack in acton ca on November 29, 2003 at 10:30:59:
Ok, hope this helps. My I&T service manual says that the optimum timing is 20 degrees BTDC. Although 20 is optimum, timing can be retarded as far as 16 degrees BTDC in cases where engine noise is critical and power requirements are not exacting. However, timing should not be advanced more than 22 degrees BTDC or max power will be reduced and glowplug failure will be increased. Hmmm. You can check the pump timing as follows:
1. Shut off the fuel and remove the injection pump timing window and clutch housing dust cover.
2. Turn engine in direction of normal rotation until the No. 1 piston is coming up on the compression stroke. Continue turning until the "TDC" mark on the flywheel aligns with the scribe mark located on the left front flange of the clutch housing.
3. Check the timing marks on the engine front end plate and pump mounting flange.
4. If alignment is required, loosen nuts on pump mounting studs, align the mark on pump mounting flange midway between the two marks on the engine front end plate and retighten the nuts. At this time, the "E" scribed line on injector pump rotor should align the scribed lines at the lower hole of the pump snap ring. These marks are visible after removing a small cover panel at the main drive gear.
5. Note: Movement of the pump between the two scribed lines on the engine front end plate gives a variation of about 3 degrees. Man! Got a finger cramp.
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