Just finished resealing the control valve spools, pump control spools/sleeves, and replacing tilt actuator in my 1998 863F with AHC controls.
this was prompted by a malfunctioning tilt actuator which was causing the valve lock to engage at first randomly but very soon every time I attempted to use tilt.
turned out the actuator was full of hydraulic oil which had been getting past the control valve spools.
so I put everything back together and now the valve lock is engaged(LED light doesn't turn on) as soon as I press the green push to operate button.
I've gone over much of the wiring and cleaned any terminals that looked corroded(basically 2 which where probably not related)
I also ran a new heavier 2/0 AWG(original was 1/0 AWG) main as well as supplemental ground cable to the battery.
The BICS fuse near the timing belt area seems fine(no corrosion).
still no tilt or lift.
I've also disconnected the hand controls to see if they were causing the issue but the lock light was still off.
could the problem be caused by a relay?
There are a few near the controls and some next to the engine under the air filter.
The "switch power" relay has some melted plastic around the male terminal and corresponding female wire terminal.
I switched it with the glow plug relay to test but valve is still locked.
Something I didn't notice previously is that when I first turn the key, all of the lights on the BICS panel light up for about two seconds.
But as before, when I lower the seat bar and press the green button all of the lights are on except the valve lock.
Any Ideas?
this was prompted by a malfunctioning tilt actuator which was causing the valve lock to engage at first randomly but very soon every time I attempted to use tilt.
turned out the actuator was full of hydraulic oil which had been getting past the control valve spools.
so I put everything back together and now the valve lock is engaged(LED light doesn't turn on) as soon as I press the green push to operate button.
I've gone over much of the wiring and cleaned any terminals that looked corroded(basically 2 which where probably not related)
I also ran a new heavier 2/0 AWG(original was 1/0 AWG) main as well as supplemental ground cable to the battery.
The BICS fuse near the timing belt area seems fine(no corrosion).
still no tilt or lift.
I've also disconnected the hand controls to see if they were causing the issue but the lock light was still off.
could the problem be caused by a relay?
There are a few near the controls and some next to the engine under the air filter.
The "switch power" relay has some melted plastic around the male terminal and corresponding female wire terminal.
I switched it with the glow plug relay to test but valve is still locked.
Something I didn't notice previously is that when I first turn the key, all of the lights on the BICS panel light up for about two seconds.
But as before, when I lower the seat bar and press the green button all of the lights are on except the valve lock.
Any Ideas?
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