Sakai CR271, Shop Manual

Page: 128 / 170

9-002
INSPECTION AND ADJUSTMENT
2. MEASUREMENT AND INSPECTION 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 (1-2) and
(1-1) of propulsion pump. Attach pressure gauge with
adapter
ⓨ
.
• Adapter : 7/16-20UNF
• High pressure gauge port (Reverse) : (1-2)
• High pressure gauge port (Forward) : (1-1)
• Pressure gauge
: 0 to 25 MPa
(0 to 3,625 psi)
②
Start the engine and set throttle lever to “FUll”.
③
Establish a condition in which machine propulsion load
becomes maximum.
(Pressure does not build up unless propulsion load is
applied.)
④
With propulsion load at maximum, slowly move F-R lever
to the side to be measured.
• Then, read pressure indicated by pressure gauge.
⑤
After measuring, promptly return F-R lever to “N”.
★
Maximum circuit pressure
(high pressure relief valve setting)
: 17.2
± 1.0
MPa (2,494
± 145
psi)
• The number “1-1” and “1-2” appearing in above illustrations are consistent with lead line number shown in
illustration of propulsion pump in “2-2. Hydraulic Component Specifications” (page 4-006).
CR271-09001
1-1
1-2
y
PG001011