5.4.8 Removing PTO clutch assembly.............................................................................................4-54
5.5 Assembling shafts ...........................................................................................................................4-54
5.5.1 Assembling select arms and HST pump shaft (PTO clutch shaft) .......................................... 4-54
5.5.2 Assembling front wheel drive shaft, shifter, spiral bevel pinion shaft and mid-PTO shaft....... 4-55
6. Servicing.................................................................................................................................................4-56
6.1 Hydrostatic transmission .................................................................................................................4-56
6.1.1 Checking center section .........................................................................................................4-56
6.1.2 Checking charge relief valve...................................................................................................4-56
6.1.3 Checking check and high pressure relief valve ......................................................................4-56
6.1.4 Checking cylinder block assembly..........................................................................................4-57
6.1.5 Checking thrust washer, thrust roller bearing, thrust plate and cradle bearing....................... 4-57
6.1.6 Checking pump shaft (PTO clutch shaft) ................................................................................4-57
6.1.7 Checking needle bearing ........................................................................................................4-58
6.2 Transaxle case ................................................................................................................................4-58
6.2.1 Checking bearing....................................................................................................................4-58
6.2.2 Checking PTO clutch disc wear ..............................................................................................4-58
6.2.3 Checking separate plate and back plate wear........................................................................4-58
6.2.4 Checking flatness of clutch piston, pressure plate and steel plate ......................................... 4-59
6.2.5 Checking clutch spring free length..........................................................................................4-59
6.2.6 Checking PTO brake disc wear ..............................................................................................4-59
6.2.7 Checking PTO brake plate......................................................................................................4-59
6.2.8 Checking clearance between differential case and differential side gear ............................... 4-60
6.2.9 Checking clearance between differential pinion shaft and differential pinion.......................... 4-60
6.2.10 Checking backlash between differential pinion and differential side gear............................. 4-60
6.2.11 Checking backlash between spiral bevel pinion gear and bevel gear................................... 4-61
6.2.12 Checking brake cam lever movement ..................................................................................4-61
6.2.13 Checking flatness of actuator and bearing holder ................................................................4-61
6.2.14 Checking height of cam plate and ball..................................................................................4-62
6.2.15 Checking brake disc and friction plate wear .........................................................................4-62
MECHANISM .....................................................................................................................................................5-1
1. Structure of front axle ...............................................................................................................................5-1
2. Front wheel alignment ..............................................................................................................................5-2
2.1 Camber of front axle..........................................................................................................................5-2
2.2 Kingpin angle of front axle.................................................................................................................5-2
2.3 Caster of front axle............................................................................................................................5-2
2.4 Toe-in of front axle.............................................................................................................................5-2
SERVICING .......................................................................................................................................................5-5
1. Troubleshooting for front axle ...................................................................................................................5-5
2. Servicing specifications for front axle .......................................................................................................5-6
3. Tightening torques for front axle ...............................................................................................................5-7
4. Checking and adjusting ............................................................................................................................5-8
4.1 Adjusting toe-in .................................................................................................................................5-8
4.2 Adjusting front axle rocking force ......................................................................................................5-8
4.3 Adjusting front wheel steering angle .................................................................................................5-9
5. Disassembling and assembling ................................................................................................................5-9
5.1 Separating front axle assembly.........................................................................................................5-9
5.1.1 Draining front axle case oil .......................................................................................................5-9
5.1.2 Removing battery......................................................................................................................5-9
5.1.3 Removing bonnet....................................................................................................................5-10
5.1.4 Removing front wheel and propeller shaft cover ....................................................................5-10
5.1.5 Disconnecting propeller shaft .................................................................................................5-10
5.1.6 Removing front axle assembly................................................................................................ 5-11
5.2 Front axle assembly ........................................................................................................................ 5-11
5.2.1 Removing power steering cylinder.......................................................................................... 5-11
5.2.2 Removing bevel gear case and front gear case .....................................................................5-12
5.2.3 Removing front gear case cover.............................................................................................5-12
viii
BX23S, LA340, BT603, RCK54D, RCK60D, RCK54, RCK60B
KiSC issued 03, 2017 A
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