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Message |
    
Mike Maroni
Member
Username: Micmac
Post Number: 46
Registered: 07-2005
Posted From: 162.84.72.111
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, August 22, 2006 - 01:06 am: | 
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While I had my machine apart this spring I adjusted the transmission due to the fact that it had about 10 inches of travel in the sticks. I now have about 6 inches of travel. The problem is the machine pulls to the left so I have to hold a 3 inch right stick correction just to make it go straight. I checked the chain tention and they all seem equal as well as tires for pressure and size. I've had this turning problem with two completely different sets of tires.
Some other info is that with the machine in forward and the wheels off of the ground I can move the right side tires but it's very difficult. When I attempt the same with the left side I can't move the tires at all. The machine used to track straight before I adjusted it. However the machine was totaly striped down so the problem might be something else. Also I don't notice the same thing in reverse although I haven't driven a good distance in reverse.
I've never seen the inside of these transmissions before so I'm not sure what adjusts what. If someone could discribe what the plungers are doing during forward/reverse forward stick and aft that would be great. Thanks in advance
Mike |
david berger
Senior Member
Username: Davidrrrd
Post Number: 426
Registered: 01-2005
Posted From: 72.72.120.56
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, August 22, 2006 - 09:38 am: |
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mike prehaps you adgusted your left side a tad to tight, your left band is conected to the top plunger, it gows around one half the left tranys drum set and then round the other half of that drum set then ataches to your bottom plunger,
a little pull ether way provided a little friction that causes the band to try to wrap itselff tighter slowing that half drum, this should alow no friction whatsoever on the other half, but you might have removed a little to much of your "nutral" by preloading your band a little.
try backing 1/2 turn on both bolts, top and bottom and then check, then again if nesesary.
your previous adgustments may have helped with as little as 1/4 turn each!
dont forget your drums and band are cooled and lubricated in use with trany fluid, lets leave room between the band and drum for that fluid. |
Fred Sowerwine, Montana's Max dealer
Advanced Member
Username: Fred4dot
Post Number: 185
Registered: 01-2005
Posted From: 216.166.168.53
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, August 22, 2006 - 11:56 am: |
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Mike, I'm a little confused by what david posted above so I will give you my take. The bottom bolts adjust the forward drive and reverse brake bands. The top bolt adjusts the reverse drive and the forward brake. There are two bands on each side. One end of each band attaches by clevis to the plunger and the other end is anchored by a pin inside. When adjusting, keep the brake bar as close to straight up and down as possible - generally speaking, the bottom bolts should be adjusted first and usually adjusting the bottom bolts takes up the slack.
To test for tranny function, have the machine blocked up so the wheels are free to turn. With the tranny in forward gear, hold the laterals in the middle of their travel and the wheels should turn freely. Pull the laterals back and the brake should prevent the wheel from turning forward (they might turn backwards but it will be hard to turn them). Let the laterals go forward and the wheels should turn, but not free wheel as they should in internal neutral. With laterals forward, the driven pulley should be engaged (and move the drive pulley), when in tranny neutral it should not move. With the tranny in reverse gear, just the opposite. With the levers forward, the brake should be engaged and you should not be able to move the wheels backwards (they will turn forward, but it will be hard to turn them). With the laterals in the middle the tires should free wheel. With the lateral back, the wheels should turn and the driven pulley should be engaged. |
david berger
Senior Member
Username: Davidrrrd
Post Number: 427
Registered: 01-2005
Posted From: 72.72.120.56
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, August 22, 2006 - 02:47 pm: |
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fred i was just pointing out his trouble was with something adgusted a lil too tight on the left side,
seams mike's aquainted with the wheeles in the air method of checking adgustmend, just a little stumpd by the outcome.
"BUT THATS BECAUSE SOMEBODY HERE MENTIONED 6" AS THE ADGUSTMENT GOAL"
im sure he would have sorted things out,
but now with your guid on adgust ment you can be sure he will sort things out too!
in the end 6" of travel may not be where it works best. |
Mike Maroni
Member
Username: Micmac
Post Number: 48
Registered: 07-2005
Posted From: 162.84.72.111
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, August 22, 2006 - 08:04 pm: |
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Fred and David thanks for the info. I went out and experimented more so you guru's might be able to diagnose the problem.
Forward gear:
As I stated the machine pulls to the left while driving forward. I put the machine up on blocks and this is what I found: with the sticks resting in the forward position I can turn both sets of wheels forward with some difficulty. The drive chains move but neither clutch moves. I can rotate the wheels in reverse it's more difficult than forward. while rotating the tires in reverse the lower clutch I think this is the driven clutch moves and the belt slips on the top clutch (drive clutch?). The right side does the same but it is a little easier than the left. When the sticks are in the rear position the brakes work locking both sides. On both sides if I PUSH the sticks forward I can't move the wheels on either side.
with the engine running at idle ( still up on blocks) the wheels will turn. As I push the sticks back the Right side brakes engages 1 inch of stick travel before the left side. The same coming out of braking the left wheels will start moving 1 inch of stick travel before the right side.
Now for Reverse:
I found out that the machine pulls slightly toward the left (drivers left facing forward) while going in reverse.
with the machine engine off and up on blocks: with the sticks forward the both sets of wheels can't be turned in reverse but can be turned forward with some difficulty. Pushing forward on the sticks locks the wheels in both directions.
with the sticks in the aft position the wheels can be turned in either direction with difficulty. The right side is slightly easier to turn than the left in both directions.
with the engine at idle still on blocks in reverse:
as the sticks move backward the right side will engage 1 inch of stick travel before the left. as the sticks move forward the braking occurs at the same place.
I hope this helps let me know if you guys have any ideas.
Thanks in advance
Mike |
Fred Sowerwine, Montana's Max dealer
Advanced Member
Username: Fred4dot
Post Number: 186
Registered: 01-2005
Posted From: 216.166.168.53
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, August 22, 2006 - 10:15 pm: |
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Mike, You didn't say if you have good internal neutral where the wheels are easy to turn either direction with your laterals mid travel. Without knowing what happens when both bands are as loose as they get, I can't tell if you have one band too tight. Did you adjust based on amount of travel of the brake bar (with both plungers out as far as they will go at the same time, you should have 3/16 of an inch of movement of the brake bar away from the tranny case.
If both laterals stop at the same place and are even going forward and backward and one engages before the other (right one inch before the left) it sounds to me like the right reverse drive forward brake band (maybe both right side bands) has been replaced and is thicker than the left.
1st off make sure you have internal neutral in both forward and reverse on both sides with the wheels easy to turn by hand with the engine off. As long as you have a good neutral, your tranny is working right and adjusted okay for operation. If travel gets excessive so the bands cannot fully engage (hit dash or seat) it needs to be adjusted. I'm thinking you have a bearing or chain on the left side that is causing mechanical drag or it could be just your weight and the engine both on the left side. Try sitting as far to the right as you can and see if that makes a difference. The only way it can be your tranny is if you don't have internal neutral and in that case, your bands would be too tight.
david, I understood the part about maybe too tight. What I didn't understand was your description of the bands and how they were connected. |
Mike Maroni
Member
Username: Micmac
Post Number: 50
Registered: 07-2005
Posted From: 162.84.72.111
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, August 24, 2006 - 01:14 pm: |
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Fred,
I have good internal neutral on both sides in both forward and reverse. I orginaly adjusted the transmission while the frame was out of my machine. I measured the 3/16 at the center of the brake bar (pivot point). Was this the right place? I made sure both plungers where out.
Mike |
Fred Sowerwine, Montana's Max dealer
Advanced Member
Username: Fred4dot
Post Number: 188
Registered: 01-2005
Posted From: 216.166.168.53
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, August 24, 2006 - 02:15 pm: |
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Mike, yes, the pivot point is the right place to measure. You did it right. Your transmission is NOT the cause of your problem. If it is not weight and you can not find a mechanical reason (tight bearing, tight chain, etc. try a little more air in the tires on the side (left) that drags and a little less in the other side. |
D. Jon Bouxsein
New member
Username: Lakeman
Post Number: 2
Registered: 09-2005
Posted From: 204.42.16.122
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, August 30, 2006 - 12:51 pm: |
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This may be way off base but check your brakes and make sure a one side isn't dragging. |
Shop Talk: Tech Tips and Q&A section