mgmayo
Active Member
- Posts
- 133
- Location
- Co.Mayo, west of Ireland
Yesterday my transfer box stuck in low. I use it regularly as usually towing 2-3t. The last few days I had a feeling it wasnt changing to high in the usual way.
I got under and removed the ratio motor, hoping to manually change it. However the spindle rotate quite easily without effect. I travelled the 5miles home in low.
Today I tackled a fix after much research on here.
I checked that the ratio motor was working which it was. I also tried another motor and ecu from my scrapper. However no worky.
I could only conclude it was a internal problem.
As I didn't have any help to take out the whole box I figured if I split it I could see the problem and decide.
I got it on the pit, loosened the crossmember to lower the rear end by 3" to get access to top bolts.
Removed the rear prop.
Drained the box.
Loosened the casing bolts.
Supported the handbrake drum and pryed it apart.
I could see that one leg of the fork that engages the gear had snapped. I found it behind the oil pump pipe.
I managed to get the fork and spindle out with the box split about 5".
Getting it back together took a bit of grunting, but it has worked out ok. It seems to be a rare occurrence as I haven't seen it referred to elsewhere.
Hope the pics help for anyone else faced with the job
Note: if you do have a similar problem, when you remove the ratio motor, the low range is when the spindle is fully anti clockwise. It's about a full rotation to high. Do so using an 8mm spanner, at either extreme it's spring loaded when you come to the in gear position.
Also note when reassembling if the spindle is set at low gear then ensure the ratio motor is also on low.
I got under and removed the ratio motor, hoping to manually change it. However the spindle rotate quite easily without effect. I travelled the 5miles home in low.
Today I tackled a fix after much research on here.
I checked that the ratio motor was working which it was. I also tried another motor and ecu from my scrapper. However no worky.
I could only conclude it was a internal problem.
As I didn't have any help to take out the whole box I figured if I split it I could see the problem and decide.
I got it on the pit, loosened the crossmember to lower the rear end by 3" to get access to top bolts.
Removed the rear prop.
Drained the box.
Loosened the casing bolts.
Supported the handbrake drum and pryed it apart.
I could see that one leg of the fork that engages the gear had snapped. I found it behind the oil pump pipe.
I managed to get the fork and spindle out with the box split about 5".
Getting it back together took a bit of grunting, but it has worked out ok. It seems to be a rare occurrence as I haven't seen it referred to elsewhere.
Hope the pics help for anyone else faced with the job
Note: if you do have a similar problem, when you remove the ratio motor, the low range is when the spindle is fully anti clockwise. It's about a full rotation to high. Do so using an 8mm spanner, at either extreme it's spring loaded when you come to the in gear position.
Also note when reassembling if the spindle is set at low gear then ensure the ratio motor is also on low.
