- 10,350
- 74
- 48
- Location
- Meadows of Dan, Virginia
Background:
The governor and associated parts of the IP on the LDS465-2 appeared very sticky a couple of days ago, so I removed the FDC and exrecised all the parts and lubed them liberally.
This morning I cranked the engine and it started nicely. The "gas" pedal was very responsive and all linkages worked well.
Oil pressure was 45-50 psi in the beginning and dropped to about 40 after 1/2 an hour. Generator right on the tick mark on the gauge, air pressure at 90 psi, power steering working well and engine op temp rising normally to about 130°F when the engine stalls out.
Cranking it produced nothing, no smoke, nothing. Fuel flow in good condition, no air in the lines and plenty returning to the tank.
I removed the plug on the hydraulic head and found the plunger in the up position. Tapped on it with a metal rod and small hammer, still stuck.
This is very reminiscent of the problem I experienced in Joplin, MO last year, where the steelsoldiers came to help with a new hydraulic head (Jason Curtis, Cabell and others), which we replaced in the parking lot at the Flying J.
Anyway, that hydraulic head has a plunger, which is so tight that it will not return to low position by spring power.
Question: How does the plunger seize up and what is the cure?
Yes I can tap harder, but if it rides on the cam, it won't help. I had to loosen it up last year also, prior to starting the engine at that time, so it will probably happen again.
Image shows IP location and the cab may have to come off to access it so that the head can come off. Big job.
It ran beautifully for 1/2 hr, though, idled at 725 rpm and revved to 2,000 several times. Transmission in neutral and transfer in neutral.
The governor and associated parts of the IP on the LDS465-2 appeared very sticky a couple of days ago, so I removed the FDC and exrecised all the parts and lubed them liberally.
This morning I cranked the engine and it started nicely. The "gas" pedal was very responsive and all linkages worked well.
Oil pressure was 45-50 psi in the beginning and dropped to about 40 after 1/2 an hour. Generator right on the tick mark on the gauge, air pressure at 90 psi, power steering working well and engine op temp rising normally to about 130°F when the engine stalls out.
Cranking it produced nothing, no smoke, nothing. Fuel flow in good condition, no air in the lines and plenty returning to the tank.
I removed the plug on the hydraulic head and found the plunger in the up position. Tapped on it with a metal rod and small hammer, still stuck.
This is very reminiscent of the problem I experienced in Joplin, MO last year, where the steelsoldiers came to help with a new hydraulic head (Jason Curtis, Cabell and others), which we replaced in the parking lot at the Flying J.
Anyway, that hydraulic head has a plunger, which is so tight that it will not return to low position by spring power.
Question: How does the plunger seize up and what is the cure?
Yes I can tap harder, but if it rides on the cam, it won't help. I had to loosen it up last year also, prior to starting the engine at that time, so it will probably happen again.
Image shows IP location and the cab may have to come off to access it so that the head can come off. Big job.
It ran beautifully for 1/2 hr, though, idled at 725 rpm and revved to 2,000 several times. Transmission in neutral and transfer in neutral.
