Sakai R2-4, Shop Manual

Page: 142 / 234

9-002
INSPECTION AND ADJUSTMENT
2. MEASUREMENT AND ADJUSTMENT OF PROPULSION
CIRCUIT PRESSURE
2-1. Measurement
wARNING
Confirm that the parking brake works properly before
measurement.
Oil temperature during measurement : 50
± 5
°C (122
± 9
°F)
①
Remove plugs from high pressure gauge port (1-8) and
(1-9) of propulsion pump. Attach pressure gauge with
the adapter
ⓗ
.
Adapter : 9/16-18UNF
High pressure gauge port (Reverse) : (1-8)
High pressure gauge port (Forward) : (1-9)
Pressure gauge
: 0 to 50 MPa
(0 to 7,250 psi)
②
Confirm that F-R lever is “N”.
③
Apply parking brake by pressing parking brake switch
button.
④
Set speed change switch to “ ”.
⑤
Start the engine and set throttle lever to “FULL”.
⑥
Establish a condition in which machine propulsion load
becomes maximum. (Pressure does not build up unless
propulsion load is applied.)
⑦
With propulsion load at maximum, slowly move F-R lever
to the side to be measured.
⑧
Read pressure indicated by pressure gauge.
⑨
After measuring, promptly return F-R lever to “N”.
Maximum circuit pressure
(high pressure relief valve setting)
: 41.8
± 1.0
MPa (6,061
± 145
psi)
The numbers “1-8” and “1-9” appearing in above illustrations are consistent with lead line numbers shown in
illustration of propulsion pump in “2-2. Hydraulic Component Specifications” (page 4-008).
•
•
•
•
•
★
•
R2-4-09001
1-8
1-9
R2-4-09001
1-8
1-9
h
PG001014
h
PG001014