Diesel pump operation.

[Sparkie67]

Hi

Whilst I have the head off the 2.4 lump, I was looking at the pump.
The timing marks didn't line up like the others after the belt was removed.

I tried moving it by hand back to the correct position but gets progressively tighter. Move it back it is ok but then goes stiff again.

Had a swift look through the past threads for any clue but not found any.

If I attach a socket to the pulley and turn it clockwise it tightens then springs forward, as though it is riding over a spring loaded cam.

I know some popes are lobe type, or run over a spring cam with a non return type valve in.

Basically, should the pump sprocket turn smoothly by hand without the tight spots, or is the pump as broken as the head.

Regards

[muddle]

Will have 4 tighter spots. One each quater.

[Sparkie67]

Thanks for that. At least I know thats not goosed.

Will be going for sale as spares then along with any other engine bits that are not required.

Andy

[Yorkshire Devil]

Belt Diagram

Thought this might be helpful.

Installation
Check tensioner pulley and guide sprocket for smooth operation. Replace if necessary.
Slacken tensioner bolt [7] . Remove tensioner spring [10]
Check free length of tensioner spring is 44,5-45,5 mm. Replace spring if necessary.
Fit tensioner spring. Push tensioner to side and lightly tighten bolt [7] .
Ensure timing marks aligned [4] , [5] & [6] .
Fit timing belt in following order:
Crankshaft sprocket.
Tensioner pulley.
Injection pump sprocket.
Camshaft sprocket.
Guide sprocket.
NOTE: Ensure belt is taut between sprockets.
Ensure timing marks aligned [4] , [5] & [6] . 7.
Slacken tensioner bolt [7] . Push tensioner against belt.
Turn crankshaft slowly four turns clockwise to TDC on No.1 cylinder.
Ensure timing marks aligned [4] , [5] & [6] . If not: Repeat installation and tensioning procedures. 10.
Tighten tensioner bolts [7] : 44 Nm. [11] & [12] : 19 Nm. 11.
Check and adjust injection pump timing.
Install:
Crankshaft sprocket guide washer [9] .
Timing belt cover [3] .
Remove crankshaft pulley bolt [1] . Fit crankshaft pulley [2] .
Ensure crankshaft pulley and timing belt cover timing marks aligned.
Fit crankshaft pulley bolt [1] . Tightening torque: 167 Nm.
Fit glow plugs. Tightening torque: 13 Nm.
Install components in reverse order of removal.
Refill cooling system.
Reset timing belt replacement warning lamp as follows: Remove grommet in speedometer housing. Depress switch using a thin
screwdriver