Cat C7 Iap Valve Locations
I can't seem to find the information I need to work through the valve lash adjustment on my C7 CAT engine. From internet searches I have done, the procedure may be similar, if not the same, for the 3126 or perhaps earlier models in the FMTV class. I have the adjustment sequence and the specs.
Cat C7 Ipr Valve Location
- CATERPILLAR C7/C9 ENGINES The Bendix ® BA-921 compressor in the C7/C9 air induction system (see Figure 10) receives its air from the engine's intake manifold (turbocharged). During the pumping condition (loaded mode), the air fl ows from the engine intake manifold through the inlet check valve and inlet line to the compressor inlet port.
- Chevy C6500 Rollback Wrecker with Wheel Lift. Caterpillar 3126b 6 cylinder diesel. Replace IACPV valve. DIY and save big bucks.The IAP Control Valve is an el.
Kambaku
Member
- Location
- Indianapolis, only because that's where the check
Cat C7 Iap Valve Location Chart
I can't seem to find the information I need to work through the valve lash adjustment on my C7 CAT engine. From internet searches I have done, the procedure may be similar, if not the same, for the 3126 or perhaps earlier models in the FMTV class.
I have the adjustment sequence and the specs so that's not the issue, however, 2 things are confusing me.
1) finding top dead center (TDC) for #1 and #6 and...
2) turning over the engine manually so that I can accomplish the first step.
I think I can confirm TDC from the position of the intake and exhaust valves if #1 is actually at TDC, but I need to manually rotate the engine to do that. There is also suppose to be an indexing point(s) on the flywheel where you can insert the appropriately sized bolt into that I have yet to locate on the housing.
On cars and trucks that I have done in the past, all you had to do was put the appropriately sized socket on the big bolt/nut on the front of the engine and turn it over in the proper direction. However, my engine has a freewheeling fan clutch and not a visible bolt that I can see to grab on to. I saw in a TM that you are suppose to be able to turn over the engine by grabbing the alternator belt, SERIOUSLY? I obviously haven't tried this yet, but I can't imagine a big engine line this turning over that easily.
So...if this process has been described elsewhere on this great forum that someone's aware of I would appreciate someone pointing me in the right direction, however, for those of us who want to tackle this procedure, it would be nice to see a thorough documentation of the process which I will do if I can get beyond square 1.
Thx,
I have the adjustment sequence and the specs so that's not the issue, however, 2 things are confusing me.
1) finding top dead center (TDC) for #1 and #6 and...
2) turning over the engine manually so that I can accomplish the first step.
I think I can confirm TDC from the position of the intake and exhaust valves if #1 is actually at TDC, but I need to manually rotate the engine to do that. There is also suppose to be an indexing point(s) on the flywheel where you can insert the appropriately sized bolt into that I have yet to locate on the housing.
On cars and trucks that I have done in the past, all you had to do was put the appropriately sized socket on the big bolt/nut on the front of the engine and turn it over in the proper direction. However, my engine has a freewheeling fan clutch and not a visible bolt that I can see to grab on to. I saw in a TM that you are suppose to be able to turn over the engine by grabbing the alternator belt, SERIOUSLY? I obviously haven't tried this yet, but I can't imagine a big engine line this turning over that easily.
So...if this process has been described elsewhere on this great forum that someone's aware of I would appreciate someone pointing me in the right direction, however, for those of us who want to tackle this procedure, it would be nice to see a thorough documentation of the process which I will do if I can get beyond square 1.
Thx,