Posted by richardinnz on August 17, 2011 at 00:31:30 from (125.239.166.183):
In Reply to: Re: Belaruse PTO posted by Joe Prince on August 16, 2011 at 18:48:04:
The 2 'thumb' scews do adjust the band. You cannot rotate the pto stubshaft with the lever engaged so the 54/1000 AND the engine/groundspeed are ENGAGED or you would be able to turn the shaft. What you did not say is that there was a locking plate and 2 split cotter pins or a lock wire between those two thumb screws to stop them winding off.(and they do) The rear screw adjusts the engagement band, the front the brake. Lever disengaged, front band tight, rear band slack Lever engaged. front band slack, rear band tight. Adjust rear screw so the lever in the cab is about 1 to 1 1/2 inch from the back of the slot in the console when engaged. Slowly disengaging the lever (best with an assistant) you should (just) feel a point where you can just turn the stubshaft before the lever is full disengaged, as the engagement band slacks off and the brake band tightens. Just so they are never both engaged at the same time. Wire the screws together so they dont slacken off. If you have to pull the clutch: Drain the tranny oil from the rear plug. Take the thumb screws out completly. Remove pto shield Remove bolts around the pto casting at the back, 4 M16 fine thread nuts + some bolts about M10 or 12 and a couple go up from underneath. There are some 'slave' bolt threaded holes and the unit comes straight out the back, not too heavy, I could manage them on my own no problem. If the rear band looks worn out, swap it for the front band, they never wear. Use instat gasket, Locktite 515 or similar but leave the remains of the old gasket on, just clean it up with petrol or bake clean. When refitting just 'feel' the front carrier bearing in before tightening every thing up. Rear pto seal is standard metric and will have the size marked on it but there should be no need to disturb it. then adjust. The over centre spring I used to tighten up so the guy had to really pull on the lever to engage the pto to get a good clamp load on the band. Never seen a band broke, but there is a first time for everything, but had to adjust heaps of them.
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