1HDt injection pump not separating from drive gear,even with puller... (1 Viewer)

[simonliew]

hi,i am trying to remove the injection pump from a hdj81,everything is loose,have a puller on the front of the shaft,i have tried hammering on the puller shaft,the drive gear is not coming off.
any body have experience this?
i even tried heating the gear a little after i remove the o ring on the front of the gear.
i have reseal 5 hdj pumps in the past year,about 6 surf pumps,3 delicas and 2 pajero pumps,everyone of them came off in about 10 minutes with a puller ,but not this one.
??????

 

[roscoFJ73]

I spent 2-3 days getting one off a 1HZ .I just kept refitting the puller and tapping away until I got an almighty crack as it released itself.

 

[db3]

I had the same problem when I took the pump off my 1HZ. Appears who ever installed it didn't line up the keyway, and must have used an impact to set it, scarring the key and gear, I used the tapping technique and an impact to finally break it loose.

 

[simonliew]

Thanks,at least i know others have problems too,already spent about 3 hrs total between jobs.

 

[mudgudgeon]

Yeah, I had similar experience with mine.
Tightened the puller as tight as I dared, and tapped at it as hard as I dared. I was s*** scared I would damage something.
Mine also let go with a big crack
Everything looked completely normal.

 

[simonliew]

There's not much room with the radiator still on,i welded a piece of angle iron to the side of the puller so i can hit it with a hummer,i guess there's not enough room to give it a good hit,left the puller on really tight again last nite,if it doesn't pop this morning,I'm going to remove the radiator today....

 

[simonliew]

Well

went to shop this morning,tried hummering a bit with the radiator still in,no luck,so i took the batteries n rad out,more room and now i can tap with a hummer on the end of the puller,still not coming out,i then remove the AC condenser and hummer the end of the puller with an impact hummer,it finally broke free from the drive gear...

 

[simonliew]

Got the pump resealed in about 2hrs ...

 

[simonliew]

Be very carefully with the little spring ,it can fall out of place during top cover install,i put some grease to keep it in place...

 

[simonliew]

If that little spring came off the pin it was suppose to sit in,truck will loose power on when cruising on hwy,don't ask me how i know....
That was many moons ago....

 

[danakittilsen]

I've got a pump currently not cooperating in the same way. The whole front plate is off the truck and sitting @gnarlynick2072 's shop. @Rock40 spent 3 days working on it. Nick and I have yet to attempt to get the gear off. But I'm keen to try.

Cheers on your victory!

 

[simonliew]

Hi danakittilsen,you don't really have to take the front plate off,even with the front plate off,you still have to separate the pump from the drive gear first.
Put the puller on tight and use an impact hummer,a 3 lbs hummer wasn't working for me.....

 

[simonliew]

Good luck

 

[danakittilsen]

Hi danakittilsen,you don't really have to take the front plate off,even with the front plate off,

Well it was the only way for him to get the pump off the bad motor, to sell it to me.

 

[Rock40]

Hi danakittilsen,you don't really have to take the front plate off,even with the front plate off,you still have to separate the pump from the drive gear first.
Put the puller on tight and use an impact hummer,a 3 lbs hummer wasn't working for me.....

Yeah, I tried all that and it wasn't the first time I removed an IP either. That sucker is STUCK. Dana-I was actually wondering if you've attempted anything with it yet.

 

[danakittilsen]

Yeah, I tried all that and it wasn't the first time I removed an IP either. That sucker is STUCK. Dana-I was actually wondering if you've attempted anything with it yet.

haven't been in all that big of a rush. Nick and I might get a chance in two weeks when I roll through Calgary.