jcb JS 200 Series, Service Manual

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8 - 1
Section F
Transmission
9803/6400
Section F
8 - 1
Issue 2*
Motor
Maintenance Specifications
If the seals are disassembled, replace them even though no damage is observed.
Note 1 . Lap, using very fine grade paste.
Note 2 . Use very fine grade paste and lap with a steel ball.
Part Name Appearance Standard Value Allowable Value Replaceable Part
(6) 1. Deeply scarred or rough Cylinder block kit
Piston surface is observed on
sliding area.
2. The clearance to the 0.030 0.060
block bore is excessive.
3. Backlash is excessive in 0.15 0.4
shoe ball section.
(4) 1. Deeply scarred or rough Roughness 0.2a No seizure and Cylinder block kit
Cylinder Block surface is observed on scar deeper
sliding area. than 0.02mm
2. The inside of the bore is See note 1. When scar
excessively worn. cannot be completely
removed, replace.
3. The engaged tooth is
abnormally worn or broken.
(5) 1. Deeply scarred, thermally Roughness 0.2a 0.8a No seizure Cylinder block kit
Valve Plate seized, unevenly worn or and scar deeper See note 1. When scar
rough surface is observed than 0.02mm cannot be completely
on sliding area. removed, replace.
(7) 1. Deeply scarred, thermally Roughness 0.2a 0.8a Retainer plate kit
Retainer Plate seized, unevenly worn or
(8) rough surface is observed
Retainer Holder on sliding area.
(9) 1. Deeply scarred, thermally Roughness 0.2a 0.8a No seizure Swash plate steel ball
Swash Plate seized, unevenly worn or and scar deeper See note 2. When scar
rough surface is observed than 0.02mm cannot be completely
on sliding area. removed, replace.
2. Deeply pitted, thermally Ball seating Ball seating Swash plate steel ball
seized on the contact depth 14.3 depth 14.5 See note 2. When scar
area with the steel ball. cannot be completely
removed, replace.
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