I am posting this for my hubby, so bare with me. I might have no idea what I am talking about! I didn't see a V1100 in the options, but our customer has a 1989 V1100. ( Yes ancient and should be replaced). The lift is super large and moves very heavy tanks.
My husband replaced the brakes. Has air side and hydraulic side. He didnt do the hydraulic side, just the air side. The issue it was having before hand was that the brakes were sticking and the lift wouldnt move at all. It had steering and power, just would go anywhere.
Replaced air side as stated. Bled, replaced breather cup, etc. The lift then moved but wouldnt stop (I think). Tested the hydraulic pump- no pressure. Replaced the hydraulic pump.
Now the lift has pressure if the parking brake is ON ( deadman seat brake interlock bypassed years ago by another mechanic), but has no pressure if you take the parking brake off- so basically, you arent going anywhere.
It tries to move, has full power, has steering.
First idea is the brake interlock system- WHERE would this be on this ancient lift, anyone know?
Second, is that the kidney seals blew.
Anyone ever have this happen? ANY ideas at all no matter how small let me know! He is also calling cat and beating the heads of mechanics there to no avail.
Showing items 1 - 7 of 7 results.
a v1100 is indeed a full container handler pre-joint venture (before MCFA), and his serial number is a good series as I remember them...
I am pretty sure that MCFA can come up with info (and parts most times too) through the local dealer's tech support/tech communicator.
well jerry,
looking in any current cat manuals they do not list this model. If it is truly a V1100 this must be like a quarry truck? the biggest cat forklift i can find in thier current manuals is a V330 and obviously the V1100 is alot larger. Its so old the serial number does not come up as a good serial number in their db.
But anyhow it sounds to me like you guys figured it out already with the bad seals.
good luck on that repair :o)
What I found is that the seals inside for the Parking brake are shot and all the oil is shooting past them into the differential. I capped the left side (this was the side I noticed was leaking a while ago from the cooling seals) when i did this the pressure went to 250 PSI and i got almost 15 gal of oil from the diff. It doesn't need a brake job, but rather a reseal.
Thanks for all your help! If I can be of service to anyone in the future please let me know.
Just a WAG but is the a park brake switch that may be wired backwards or defective that may operate a solenoid or something for the brake system?????
If you crack the brake bleeders, does fluid come out under pressure? If not, then maybe the shoes are soaked with oil- I've seen oil soaked shoes get extremely grabby.
No it is not a C. It is a Cat V1100, Serial Number: 6BF048.
It is a 1989 container lift truck with a spreader on it and air over hydraulic brakes. It is a 40,000 lb capacity to be able to move shipping containers ( very large industrial ones). The operator sits a story and a half off the ground.
At first, the brakes locked up. I rebuilt the brake pump with a new cartridge kit, and still did not have the recommended 400-500 psi. I did find that when the parking brake was engaged, the 500 psi's would return. But the parking brake is still locked up.
My question is is why? Has anyone had this experience?
I added 30 gallon of hydraulic oil to the tank so it is not that. I am guessing that when the parking brake is on, the pressure is bypassing somewhere... but where? Any ideas?
The dead man brake interlock under the seat on this particular type of lift (seat switch) was bypassed years ago by a different mechanic.
Someone suggested that maybe the brake seals are shot at the differential. Would that cause the brake to remain locked up? ( parking brake?)
Could that be a model V110C ? And how about a serial number ? Your post is very confusing but maybe someone can help if you rewrite it with exactly how it was reacting and what parts he replaced and where were they located (hydraulic lift pump, transmission pump, brake master cylinder, etc.)
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