01 BR275 MP Plus- Tiller Won't Spin?

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01 BR275 MP Plus- Tiller Won't Spin?

Postby hcscg on 19 Feb 2013, 20:13

Hello

My snowmobiling club just got a 2001 BR275 Cummings Snow Cat 14’ wide w/tiller.
Sometimes the tiller won’t work at all on a trip out. Sometimes it will work great the whole night, just hard to get it started the first time (not sure what get it going).

Here is a few things we always check-
The tiller kill switch is up
Tried different RPM of the tiller
Always have the motor and fluid warmed up
We have tried moving forward, dropping the tiller in the same motion, no luck.
The auto float light will come on even if the tiller isn’t spinning
The direction light won’t come on when it’s not spinning
When it’s not working, it won’t work in rev either
It’s like it’s dead for some reason, like a failsafe, or something not sensing, or something is bad that won’t allow it to kick in.
All motion of the tiller, up down, pitch is fine too.
It just won’t spin???

Doubt that any of this is related-
The Hydrostatic Temperature switch never shows anything when I flip it
The auto center box on the tiller it’s self was replaced by Prinoth this fall.
Also we need to replace the side lights bulbs on the cat, under the cab.

Any thoughts are appreciated.
hcscg
 
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Joined: 18 Feb 2013, 14:13

Re: 01 BR275 MP Plus- Tiller Won't Spin?

Postby PNWmech on 16 Oct 2014, 13:37

We had a similar problem here. it ended up being a pin on the MP plugs pushed out but was not obvious without disassembly. It was in the rear plug. If you still need it I can probably dig up the pin number.
PNWmech
 
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Joined: 30 Sep 2014, 13:33

Re: 01 BR275 MP Plus- Tiller Won't Spin?

Postby ward-o on 01 Nov 2014, 16:03

HEY GUYS, COUPLE OF QUICK THOUGHTS HERE
THIS MAY SOUND SILLY, BUT,9 OUT OF TEN TIMES, 1ST THING YOU SHOULD DO IS RE-CHECK YOUR HOSE "QUICK CONNECT COUPLERS". IF ONE OF THEM HAS RATTLED LOOSE , OR IS NOT OPENING CORRECTLY, IT CAN PUT THE SYSTEM INTO A HYDRO- LOCK SITUATION. MAKE SURE THEY ARE TOTALLY TIGHT.
SECOND, DID YOU SERVICE YOUR U-JUOINTS IN SUMMER SERVICE? THEY MUST BE INPECTED ONCE A SEASON. THEY ONLY GET PACKED WITH GREASE ON INSTALL AND CAN'T BE REACHED AFTER INSTALLATION. REPLACE EVERY 3000 HRS. AND PRE-PACK THEM ON INSTALL.
3RD, CHECK THE CONNECTORS ON THE WEATHERPACK HARNESS PLUG ON THE TILLER PUMP EDC. MAKE SURE THE PIN CONNECTORS ARE ALL GOOD AND HAVENT PULLED LOOSE OF THE CONNECTORS. WE ZIP-TIE OURS SO THEY CANT RATTLE LOOSE .
LASTLY, AND THIS IS A RARE ONE ,IF IT ONLY HAPPENS TO HALF OF THE TILLER AND NOT THE OTHER, YOU MAY HAVE A SPUN SPLINED " SILENT BLOCK" INSIDE THE GEARBOX END OF YOUR TILLER BARREL. THEY ARE GLUED IN WITH A 680 GREEN LOCTITE AND IF THE ROTOR EVER HIT SOMETHING HARD AND STOPPED THE BARREL SUDDENLY , EVEN WITH PUMP RELIEFS, IT CAN BREAK THE BLOCKS LOOSE SOMETIMES. NORMALLY YOU HAVE TO USE HEAT TO BREAK THE LOCTITE FREE SO THEY CAN BE REMOVED WITH A PULLER.
IF IT ISN'T ONE OF THESE, YOU MAY HAVE A BAD TILLER HYDROSTATIC MOTOR&PUMP ASSY :-( SORRY BIG $
HAVE IT GAUGED UP TO CHECK . HOPE THIS HELPED, LET ME KNOW WHAT YA FIND
ward-o
 
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Joined: 13 Jun 2014, 14:31

Re: 01 BR275 MP Plus- Tiller Won't Spin?

Postby ward-o on 01 Nov 2014, 16:18

BR-275/MP I ASSUME TEMP GAUGE WORKS NORMALLY FOR COOLANT TEMP, SO I DOUBT ITS THE GAUGE. IF YOUR HYD TEMP GUAGE NEVER CHANGES WHEN YELLOW BUTTON IS PUSHED, USUALLY YOUR WIRE ON THE HYDRAULIC TEMP SENDER HAS COME OFF, ITS LOCATED DOWN UNDERNEATH THE RIGHT REAR CORNER OF TUB BY YOUR HYD OIL TANK. IT SITS IN A ALUMINUM MANIFOLD. THE LITTLE SPADE CONNECTOR GETS PULLED OFF THE POST BY SNOW/ICE REALLY EASILY, TINY ZIP TIES CAN BE CRISS-CROSSED TO HELP KEEP IT FROM FALLING OFF. OR YOU MIGHT HAVE A BAD SENDER OR WIRE
GLUCK
ward-o
 
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Joined: 13 Jun 2014, 14:31

Re: 01 BR275 MP Plus- Tiller Won't Spin?

Postby ward-o on 01 Nov 2014, 16:43

HEY ONE MORE THOUGHT ON THE TILLER SPINNING ISSUE, IS YOUR TILLER JOYSTICK ,OVER TO THE LEFT? IT MUST BE IN FLOAT FOR THE PUMP TO ENGAGE IF ITS SET TO THE RIGHT (OR COMPACTOR FLOAT) IT DISABLES THE TILLER PUMP FROM TURNING ON. BUT ALL OTHER FLOAT FUNCTIONS WILL WORK THE SAME,
IF YOU HAVE A SCREEN TO READ THE COMPUTER,CHECK FAULTS & HAVE THE TILLER SPEED POT CHECKED FOR A DEAD SPOT OR IT MAY JUST NEED RECALIBRATED IF ITS THROWING A LOT OF POT FAULTS. OUT OF RANGE USUALLY
RESETTING THE RANGE FIXES THE ISSUE. CHEERS,


"JUST BECAUSE IT WILL, DOESN'T MEAN IT WAS EVER MEANT TO"
ward-o
 
Posts: 36
Joined: 13 Jun 2014, 14:31


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