Sakai R2H-2, Shop Manual

Page: 68 / 151

9-005
INSPECTION AND ADJUSTMENT
3-2. Adjustment
• If measurement results indicate the pressure deviating
from standard charge relief valve setting range, make an
adjustment in accordance with procedure described below.
①
Check nut (2) of charge relief valve (1-7) for evidence of
having loosened.
②
If there is evidence of nut having loosened, adjust charge
relief valve so that pressure becomes within standard
charge relief valve pressure setting range while watching
pressure gauge.
• To adjust pressure, loosen nut and turn adjustment screw
(3).
Adjustment screw turned clockwise
: Pressure rise
Adjustment screw turned counterclockwise
: Pressure drop
Pressure change rate : 0.39 MPa/turn (57 psi/turn)
③
If there is no evidence of nut having loosened, remove
charge relief valve.
④
Check removed charge relief valve for trapped dirt and
scratches on its seat.
⑤
If trapped dirt is present, disassemble and clean charge
relief valve.
⑥
If a scratch is found on seat, replace charge relief valve.
⑦
After adjustment, measure pressure again and check
that pressure reaches standard charge relief valve setting
range.
N•m
(2) Nut : 52 N·m (38 lbf·ft)
(NOTICE)
• Carefully disassemble and reassemble after taking
steps to prevent foreign material from getting in.
• The number “1-7” appearing in above illustrations is consistent with lead line numbers shown in illustration of
propulsion pump in “2-2. Hydraulic Component Specifications” (page 4-007).
R2H-2-09004
1-7
SV510-
ޓ
-08008
Charge relief valve
2
3