Hello everyone. I am new to the forum but have had a CT450 for a year. My question is how can I adjust my hydros so I can raise the loader boom and level the bucket at the same time? It stops when I try it. I am an experienced operator, so I do know it takes a bit to find the sweet, spot but I cant. I had a case DX45 and I was able to boom up and level at the same time with ease.
FEL Controls for my CT450
- Thread starter kmwahoo
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J_J
Super Star Member
- Joined
- Sep 6, 2003
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- 18,952
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- JACKSONVILLE, FL
- Tractor
- Power-Trac 1445, KUBOTA B-9200HST
I believe some valves can operate both spools at the same time.
Other valves only operate one spool at a time.
Quote:
SERIES-PARALLEL VALVE is a multi-spool valve which feeds pressure to the cylinder ports from the open center passage, so
that only the upstream spool, if fully actuated, would take priority over all pump flow. However, the return circuit is common to all cylinder
ports so that actually a double-acting cylinder and a single-acting cylinder (when lowering) can both be operated simultaneously.
The CROSS model 鼎A? 鼎D or 鼎S two spool valves are of this type.
PARALLEL VALVE is a multiple spool valve whereby all spools may simultaneously control different functions. The oil flow will
be divided equally providing the operating pressure requirements for all functions are the same. The function requiring the lowest pressure
will operate first. The next function will operate when pressure reaches it痴 requirements, before or after the first function is fully
operated. The CROSS 釘A valve is an example of a Parallel Valve.
Other valves only operate one spool at a time.
Quote:
SERIES-PARALLEL VALVE is a multi-spool valve which feeds pressure to the cylinder ports from the open center passage, so
that only the upstream spool, if fully actuated, would take priority over all pump flow. However, the return circuit is common to all cylinder
ports so that actually a double-acting cylinder and a single-acting cylinder (when lowering) can both be operated simultaneously.
The CROSS model 鼎A? 鼎D or 鼎S two spool valves are of this type.
PARALLEL VALVE is a multiple spool valve whereby all spools may simultaneously control different functions. The oil flow will
be divided equally providing the operating pressure requirements for all functions are the same. The function requiring the lowest pressure
will operate first. The next function will operate when pressure reaches it痴 requirements, before or after the first function is fully
operated. The CROSS 釘A valve is an example of a Parallel Valve.
SSdoxie
Elite Member
These valves will multi-function. There isn't a lot of oil flow to divide to the 2 circuits so engine RPM should be at least 2000 to get decent flow. Flow goes to circuit with least resistance, so raising a load in bucket would require very slight feathering of the bucket and more stroke on the lift. Coming down empty for return to dig mode would be just opposite.
