Hi,
Background :
My 1974 FJ40 saw some good offroad actions in a 40 series meetup, then came back home normally, was parked (parking brake on) and sat for a month without being used (not planned but that's life...).
So after 1 month I start back my FJ40 and drive directly forward, I actually go to the local city and back without issue. But when I want to reverse it I notice a strong resistance, like a wall. Even being in a slope where normally the parking brake can't hold the vehicle I had to really force my way back for the truck to reverse. And it would reverse with the feeling of escalading big obstacles and regular "clongs" noise, not like something dragging.
At first I was very afraid that it was a gear somewhere... but after some dismantling and testing diff, transfer case and transmission seem fine. Issue comes from the parking brake.
I tried to play with the adjustment bolt of the parking brake and then set it back following manual, it unlocked the parking brake in both direction but as soon as I used the parking brake it stayed blocked again in reverse direction.
If I let the adjustment bolt untighten to the maximum it does not block again, but obviously something is wrong inside my parking brake so I opened it.
Drum looks fine:
parking brake untighten:
Parking brake tighten:
I tried to compare to the manual and part schematics but the only thing I can see missing is the dust cover for the adjustment bolt. But I don't think this can be the issue?
All springs are there and look ok. Brake pads looks good.
The bottom part can move freely but from the schematics I don't understand how it's supposed to be held in place ??
And when using the hand brake you can clearly see the movement is almost only on the left part and when untightening it does not come back completely in place. So it explains why it only catch in reverse but not why it's doing that ?
I couldn't find a video of the parking brake internals to see how it's supposed to function. So any help appreciated if you know how it's supposed to work or if you can spot what is the issue with mine.
Thanks!
Background :
My 1974 FJ40 saw some good offroad actions in a 40 series meetup, then came back home normally, was parked (parking brake on) and sat for a month without being used (not planned but that's life...).
So after 1 month I start back my FJ40 and drive directly forward, I actually go to the local city and back without issue. But when I want to reverse it I notice a strong resistance, like a wall. Even being in a slope where normally the parking brake can't hold the vehicle I had to really force my way back for the truck to reverse. And it would reverse with the feeling of escalading big obstacles and regular "clongs" noise, not like something dragging.
At first I was very afraid that it was a gear somewhere... but after some dismantling and testing diff, transfer case and transmission seem fine. Issue comes from the parking brake.
I tried to play with the adjustment bolt of the parking brake and then set it back following manual, it unlocked the parking brake in both direction but as soon as I used the parking brake it stayed blocked again in reverse direction.
If I let the adjustment bolt untighten to the maximum it does not block again, but obviously something is wrong inside my parking brake so I opened it.
Drum looks fine:
parking brake untighten:
Parking brake tighten:
I tried to compare to the manual and part schematics but the only thing I can see missing is the dust cover for the adjustment bolt. But I don't think this can be the issue?
All springs are there and look ok. Brake pads looks good.
The bottom part can move freely but from the schematics I don't understand how it's supposed to be held in place ??
And when using the hand brake you can clearly see the movement is almost only on the left part and when untightening it does not come back completely in place. So it explains why it only catch in reverse but not why it's doing that ?
I couldn't find a video of the parking brake internals to see how it's supposed to function. So any help appreciated if you know how it's supposed to work or if you can spot what is the issue with mine.
Thanks!