TSE DPT40-B, Руководство пользователя

Страница: 295 / 472

56
saue
Series 90 Minor Repair Instructions 9
9.2 Pump Minor Repairs
Remove Multi-Function
Valve Cartridge
Install and Torque
Cartridge
9.2.1 Multi-Function Valve Cartridges
1. The multi-function valve cartridge is removed
with a 1-1/4 inch (030 through 100 pumps) or a 1-
5/8 inch (130 through 250 pumps) hex wrench on
the largest hex on the cartridge.
2. Inspect cartridge for damage to parts and O-
rings.
The multi-function valve cartridge may be disas-
sembled for cleaning. However, if the pressure
limiter housing assembly is disassembled, the
pressure settings must be readjusted. Usually, if
there is contamination problem, it will be in the
valve seat assembly. If it is not necessary to clean
the interior of the cartridge, proceed to step 7.
NOTE: Multi-function valve components are not
sold separately as service parts (except O-rings).
3. On early versions of the multi-function valves, the
valve seat assembly is held by a retaining ring.
Remove retaining ring with a snap ring pliers.
On late versions, the valve seat section is pressed
over a lip. Place the cartridge in a vise and pry the
lower section off with an appropriate tool. Main-
tain sufficient control to prevent the contents from
flying loose.
4. Remove pressure limiter lock nut and bypass
actuator.
5. Unscrew the pressure limiter adjustment screw
from the bypass actuator.
6. Clean and inspect all disassembled parts.
7. Reassemble with new, lightly lubricated O-rings
by reversing the above procedure. For early
versions assemble with the retaining ring. For
late versions, place the cartridge in a vise and
press on lower assembly.
CAUTION
The pressure settings must be readjusted after
disassembling the pressure limiter housing of
the multi-function valve cartridge (see Sec.
8.2.1 )
8. Install cartridge in multi-function valve cavity and
torque to 89 Nm (66 ft•lbf) for 030 through 100
pumps and 279 Nm (206 ft•lbf) for 130 through
250 pumps. Do not overtorque the multi-func-
tion valve cartridge.
Multi-Function Valve Cartridge Components (Later
Production)
Multi-Function Valve Cartridge Components (Earlier
Production)
90000276 90000277
90000278
90000279
High Presssure
Relief/Check
Valve Poppet
Spring Seat
Check Valve
Poppet
Valve
Seat
Spring
Pressure Limiter
Poppet Seat
Pressure Limiter
Valve Poppet
Pressure Limiter
Valve Spring
Bypass
Actuator
Pressure Limiter
Adjustment Screw
Pressure Limiter
Lock Nut
Pressure Limiter
Housing
Multi-Function Valve Cartridge Sectional View
90000869
CONTENTS