Group 2 Major Components - Hyundai R480LC-9S Service Manual

GROUP 2 MAJOR COMPONENT GROUP 2 MAJOR COMPONENT
1. MAIN PUMP 1. MAIN PUMP
Part name & inspection item
Clearance
between piston(1) &
cylinder bore(2)
(D-d)
Play between
piston(1) & shoe caulking
section(3)
( )
Thickness of shoe
(t)
Free height of cylinder
spring(4)
(L)
Combined height of set
plate(5) & spherical
bushing(6)
(H-h)
Surface roughness for
valve plate (sliding face)
(7,8), swash plate (shoe
plate area) (9), &
cylinder(2) (sliding face)
3 1 2
9 6 5 4 7
d D
t
L
Surface roughness
necessary to be corrected
Standard surface roughness
(corrected value)
Standard
dimension
0.043
0-0.1
5.4
47.9
23.8
h H
3z
0.4z or lower
7-23
Recommended
Counter measures
replacement
value
Replace piston
0.070
or cylinder.
0.3
Replace
assembly of
piston & shoe.
5.0
Replace cylinder
47.1
spring.
Replace
22.8
retainer or set
plate.
Lapping
290LC7MS08