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Troubleshooting
Pump Lowers
WARNING
INJECTION HAZARD
To reduce the risk of a serious injury,
follow the
Pressure Relief Procedure
on page 21 before checking or servicing
the equipment.
1.
Follow the
Pressure Relief Procedure
on page
21.
2.
Check all possible causes and problems before
disassembling the pump.
Pump runs too fast, or erratically
Check if the piston valve is stuck open, or if the
piston packings are worn. Clear the piston valve;
replace the packings. See your separate pump
manual (supplied).
Check if the intake valve is stuck open, or if the ball
or seat is damaged. Clear or service the intake
valve. See your separate pump manual.
Output pressure of proportioning pump A
or B is low on the upstroke
Check if the piston valve is stuck open, or if the
piston packings are worn. Clear the piston valve;
replace the packings. See your separate pump
manual.
Output pressure of proportioning pump A
or B is low on the downstroke
Check if the intake valve is stuck open, or if the ball
or seat is damaged. Clear or service the intake
valve. See your separate pump manual.
Output pressure of proportioning pump A
or B is low on both strokes
Clean or repair the fluid filters; see the separate
filter manual 307273 (supplied).
Check if the intake valve is stuck open, or if the ball
or seat is damaged. Clear or service the intake
valve. See your separate pump manual.
Check if the piston valve is stuck open, or if the
piston packings are worn. Clear the piston valve;
replace the packings. See your separate pump
manual.
Содержание SuperCat 232721
Страница 23: ...308925 23 Notes...
Страница 82: ...308925 82 Service 8753A Fig 100 A B 497 446 385 361 381 442 363 311 312 363 442 361 381 385 424 469 458...
Страница 98: ...308925 98 Parts 8789A 8337A 53a 53b 53c 54a 54b 54c 54d 54e 56 54f 70 50 14 15 10 12 13 64 1 69 31...
Страница 111: ...308925 111 Notes...
Страница 112: ...308925 112 Dimensions 8787A 42 in 1067 mm 66 in 1676 mm 74 in 1880 mm...
