hello....i have a kubota Z422 ...54 inch....100 hours...bought last year....i have replaced 2 belts on mower this year...100 dollars a belt ...i have less than 30 minutes on new belt and can smell rubber burning....i have checked spindles and they are all turning smoothly changed bearings on 1 because of dust cover underneath was cracked .... that didnt help...any suggestions would be appreciated
belt replacement
- Thread starter HUDDY
- Start date
North Idaho Wolfman
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L3450DT-GST, Woods FEL, B7100 HSD, FEL, 60" SB, 743 Bobcat with V2203, and more
Either something got bent and is misaligning the belt or more likely you have a bearing in a tension pulley that is going out.
Changing belts (2) on a Craftsman lawn ”tractor”….. This looked like a 20 minute job.
Four hours later….. still puzzled why new belts don’t fit…. too loose. Checked PNs… Correct PNs.
Checked Mx Manual diagram for belt-routing…. Yep, looks right… but belts still too loose.
One belt drives HST…other drives blades…. Whoops! Printed belt-routing diagram not accurate. Should have taken a pic before removing the old belts. Younger son-in-law figured it out.
One of the puzzling things about spindle bearings on my finish mower…. the spindles have a grease-fitting/zerk on top…. greasing them fills the spindle-shaft-case full of grease….but the bearings themselves are sealed bearings. No way that filling those spindles with grease does anything at all to lubricate those bearings.
A YouTube presenter demonstrates removing one of the plastic seal on the bearings so grease can get to the roller/balls. Hmmmnnn……
Four hours later….. still puzzled why new belts don’t fit…. too loose. Checked PNs… Correct PNs.
Checked Mx Manual diagram for belt-routing…. Yep, looks right… but belts still too loose.
One belt drives HST…other drives blades…. Whoops! Printed belt-routing diagram not accurate. Should have taken a pic before removing the old belts. Younger son-in-law figured it out.
One of the puzzling things about spindle bearings on my finish mower…. the spindles have a grease-fitting/zerk on top…. greasing them fills the spindle-shaft-case full of grease….but the bearings themselves are sealed bearings. No way that filling those spindles with grease does anything at all to lubricate those bearings.
A YouTube presenter demonstrates removing one of the plastic seal on the bearings so grease can get to the roller/balls. Hmmmnnn……
Last edited:
GreensvilleJay
Well-known member
Equipment
BX23-S,57 A-C D-14,58 A-C D-14, 57 A-C D-14,tiller,cults,Millcreek 25G spreader,
possible problem....
Carefully check the 'tension arm'. You've got 7 pulleys that need to be lined up.
Went through 3 or 4 belt on an AC130 last year and FINALLY clued in that the 'tension arm' was 'wobblely' on it's pivot shaft.Maybe the PO never greased it ? Spent an hour getting it firm and silky smooth, NO up/down play. Put new belt on, went and cut 1/5th ac of 12" tall grass NO problem.
Belts should run in center of 'flat' pulleys NOT to one edge. Also look to see if spacers/washers/shims ARE on the correct side of pulleys. Seen that before as well...oopsy.....easy to do.
Carefully check the 'tension arm'. You've got 7 pulleys that need to be lined up.
Went through 3 or 4 belt on an AC130 last year and FINALLY clued in that the 'tension arm' was 'wobblely' on it's pivot shaft.Maybe the PO never greased it ? Spent an hour getting it firm and silky smooth, NO up/down play. Put new belt on, went and cut 1/5th ac of 12" tall grass NO problem.
Belts should run in center of 'flat' pulleys NOT to one edge. Also look to see if spacers/washers/shims ARE on the correct side of pulleys. Seen that before as well...oopsy.....easy to do.