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Mike Maroni
Advanced Member
Username: Micmac
Post Number: 122
Registered: 07-2005
Posted From: 162.84.77.67
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, April 03, 2007 - 09:49 pm: | 
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I have a 92 max IV with a Briggs 16 HP vanguard. I need to replace the belt but I've got a few problems.
This is not the original engine previous owner replaced it and has shims (washers) under it to increase spacing between the clutches. I have no idea if the distance from one clutch to another is at the factory distance or it's been shimmed to accommodate the current belt.
I'm thinking that the clutches are the original ones but I can't even be sure of that.
So here are my questions
1. Can anyone tell me what the proper (factory) distance between the drive and driven clutches.
2. How do you measure the above? I'm thinking center of mounting bolt on each.
3. How can I I.D. the clutches to see if they are the original ones?
4. If everything is off from factory how do I measure for a new belt. I'm not comfortable cross referencing the current belt (Goodyear power-streak 71135) because I'm not even sure it's correct for this application
If possible some specific brand recommendations will be greatly appreciated.
Thanks in advance
Mike |
liflod
Advanced Member
Username: Liflod
Post Number: 134
Registered: 01-2005
Posted From: 151.201.211.103
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, April 04, 2007 - 08:10 am: |
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Hey Mike,
I'll get some measurements for you when I get home tonight. I had the same question when I put a different engine in my old Max IV. I now have a newer (1999) that I can measure for you. It is common to use washers for adjusting belt tension.
Lance |
Mike Maroni
Advanced Member
Username: Micmac
Post Number: 123
Registered: 07-2005
Posted From: 162.84.77.67
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, April 04, 2007 - 10:00 am: |
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Thanks Lance.
Do you know if the goodyear power-streak 71135 is right for aatv use? I want to use the correct belt. I read somewere on the board that the belts should have a "V" in the model # indicating variable is that correct? |
liflod
Advanced Member
Username: Liflod
Post Number: 135
Registered: 01-2005
Posted From: 24.3.232.162
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, April 06, 2007 - 04:14 pm: |
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It's a difficult measurement to make. It's about 11 1/4 inches center to center, but the tape is on an angle. I would guess you want the shaft centers about 10 1/2- 11 inches for the factory belt. Measure yours and see if it falls in that range. If it does, I would order the factory belt. If yours is less than 10 1/2, you can use the factory belt and shim the engine to take up the slack.
Lance |
liflod
Advanced Member
Username: Liflod
Post Number: 136
Registered: 01-2005
Posted From: 24.3.232.162
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, April 06, 2007 - 04:17 pm: |
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Also, it looks like the pulley sheaves are about 2 1/2 inches apart. Once again, its hard to get my tape and my head in there to get anything real accurate. |
Mike Maroni
Advanced Member
Username: Micmac
Post Number: 124
Registered: 07-2005
Posted From: 12.178.201.226
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, April 06, 2007 - 10:36 pm: |
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Lance,
Thanks for doing that I'm not near my machine right now but i'll check on mon thanks again
Mike |
Mike Maroni
Advanced Member
Username: Micmac
Post Number: 125
Registered: 07-2005
Posted From: 162.84.77.67
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, April 10, 2007 - 02:59 pm: |
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How about if I start from square 1. Does anyone know the belt specs for an older Max IV it's a 92 but has a newer 16 hp Briggs in it? if not the specs than maybe the manufacturer and part number so I can cross reference it? I was wondering if the belt technology has gotten better over the last few years if there is an upgraded replacement belt I could use
Thank
Mike |
Mike Maroni
Advanced Member
Username: Micmac
Post Number: 126
Registered: 07-2005
Posted From: 162.84.77.67
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, April 12, 2007 - 04:35 pm: |
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I bought a belt after speaking with the parts department at RI. The belt I bought is a gates belt 19t4300 it is listed as having an angle of 24 an outside circumference of 43 inches and a top width of 1.19 in. The parts guy from RI quoted to me these specs as well. so here is my question. The belt is not above (proud) of the driven clutch and at full rpm is just shy of being level with the top of the drive clutch. I read on the board the belt is supposed to be above each clutch in the above mentioned conditions. With the machine off the belt rests against the inner driven clutch wall and has a .155 inch spach between the other wall is this too much? Is the belt too narrow? Or is there a problem with the clutch springs? The machine has much better power / acceleration than with the old belt. So all you clutch gurus out there please help !!
Mike |
david berger
Senior Member
Username: Davidrrrd
Post Number: 519
Registered: 01-2005
Posted From: 72.72.84.209
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, April 12, 2007 - 05:41 pm: |
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mike at rest the driven (trany)pully should have the belt at the top or a littl out.
at hi to full rpm it should be down between the pully halfes about as far as the tapered portion of the pully set go!
the engines pully is open at rest or hopefuly at idel as well, there should or may be some space between the shaft or bushing between the open pully halfs.
at the higher rpms aproching full you find the belt reaching the top.
it is saposed to be the centrifical forces from the rpm that squeeze the pully halfs cloased.
thusly the tug on the driven pullys drive them open. the chainging ratio in sizes of the pully contact points is part of the tork converter discription. C.V.T. constant velosity transmition!
if at speed your belt is at the top of BOTH your pullys there is something wrong!
your belt might be too long,
maybe one of the pullys are not working corectly?
maybe you need to move the engine away from the trany a little, your belt needs to force the driven trany pullys apart as the drive pully is cloasing. |
Mike Maroni
Advanced Member
Username: Micmac
Post Number: 127
Registered: 07-2005
Posted From: 162.84.77.67
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, April 12, 2007 - 06:03 pm: |
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David,
I guess I didn't describe the conditions very well (my high school English teacher was right I'm a terrible writer)
At rest: drive clutch - the belt is all the way down between the sheaves(sp?) were it should be. There is a .155 gap between the belt and the other sheave.
Driven clutch - the belt is resting at the top of the driven clutch but it is not slightly above it as I've heard described on this board.
At speed: Drive clutch - the belt is near the top of the sheave but not above it as described on this board.
Driven clutch - the belt is all the way down between the two halves.
At idle in forward gear the Max will creep just a bit but it's a brand new belt and I'm sure it will stretch slightly.
One thing I haven't done is clean out both clutches and use a proper lube on them. I have just used some lithium grease on them in the past
Mike |
Mike Maroni
Advanced Member
Username: Micmac
Post Number: 128
Registered: 07-2005
Posted From: 162.84.77.67
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, April 13, 2007 - 08:10 am: |
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I took som pictures the first two are at idle the last two are at full RPM (the belt looks like it's stopped but it's really moving. Let me know what you think. Is this the way it should be?
Drive at idle
Driven at idle
Drive at full RPM
Driven at full RPM
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liflod
Advanced Member
Username: Liflod
Post Number: 138
Registered: 01-2005
Posted From: 151.201.211.103
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, April 13, 2007 - 08:47 am: |
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Looks right to me.
Lance |
david berger
Senior Member
Username: Davidrrrd
Post Number: 520
Registered: 01-2005
Posted From: 72.72.84.209
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, April 13, 2007 - 09:03 am: |
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it should be cloase enoph if not perfict.
the pics look good.
is that belt 1 inch and 3/16ths or 1 inch and 1/4 wide? |
Mike Maroni
Advanced Member
Username: Micmac
Post Number: 129
Registered: 07-2005
Posted From: 162.84.77.67
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, April 13, 2007 - 09:38 am: |
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David,
It's a 1 and 3/16 belt
Mike |
Fred Sowerwine
Advanced Member
Username: Fred4dot
Post Number: 253
Registered: 01-2005
Posted From: 216.166.168.53
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, April 13, 2007 - 10:29 am: |
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Mike, looks right to me, too; now all you need is some belt dressing. |
Mike Maroni
Advanced Member
Username: Micmac
Post Number: 130
Registered: 07-2005
Posted From: 67.142.130.38
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, April 13, 2007 - 02:37 pm: |
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Fred,
Thanks I put some on when I installed the belt. It was the cheap spray on type. When I get a chance I'll put some of the brush on stuff you recomend.
Mike |
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