problems with B hydraulics

reading somewhere I learned I should be able to leave pto engaged to run hydraulics, and there should be 3 positions; up, hold, and down?  is this correct?

what did you use for fluid?

   Most of us us Hydra-trans fluid. Works for both transmissions and hydraulics. 30 sae should be ok.

any help or advice?

Still looking for help. Hydraulics are strong going up. Just don't go down? Looking for a lil help before I take the pump off and start tearing into it. My snow plow is all done, so now I need the hydraulics working correctly.

Ok. Thanks for the info. I do now have the hydraulic control lever and linkage, works good doesn't bind. It bolts on with my switching valve. Pump comes off in the morning

MODELS B-C
In cases of faulty operation of the
pump valves the unit can oftentimes
be corrected without disassembly by
removing it from the tractor and
flushing it with a petroleum solvent or
gasoline.
320. R & R AND INSPECTION, Removal
of the pump from the pto housing
is accomplished by disconnecting
the hose lines and controls and removing
the bolts or screws which retain it
to the pto housing. Removal of the
pump driving camshaft which is integral
with the pto shaft is done by
following the procedure outlined in
paragraphs 311 and 312.
Procedure for bench disassembly of
the pump is as follows:
Plungers can be lifted out of their
cylinders after removing the cam arm
pins (27—Fig. AC:60 or AC161) which
are retained by hair pin locks.
Inlet valves are removed by unscrewing
the valve plugs (22) and
pulling the internally threaded seat
inserts (37) down with a sleeve and
puller screw threaded into the insert.
If seat inserts are not threaded
they can be driven out using a drift
1/32 inch smaller in diameter than the
O.D. of the insert. This method usually
calls for a renewal of the insert because
of damage done during removal.
Discharge valves (3) can be removed
by same methods used on inlet
valves after removing valve plugs (5)
I 2
27
13
23
Fig, AC160~Models B, and C power lift hydraulic pump which is of the two plunger type.
Pump is mounted on right side o# accessory units housing.
10. Relief valve ball 19. Intake valve insert
11. Relief valve spring pin
plunger 20. Intake \
1. Pump body
2. Discharge valve insert
3. Discharge valve ball
4. Discharge valve
spring
5. Discharge valve plug
6. Relief valve plug
7. Control rod
8. Outlet connection
9. Relief valve insert
12. Relief valve thimble
13. Control shaft
14. Torsion spring
15. Retaining pin
16. Shaft oil seal
17. Plunger sprinff
18. Access plug
20. intake valve sleeve
21. Intake valve ball
22. Intake valve plug
23. Intake pipe
24. Plunger
25. Cam arm
26. Cam roller
27. Cam arm pin
springs and balls. These valves are
removed through top of housing.
Control shaft (13) is removed by
first removing the washers and torsion
spring (14). Turn shaft to *lift** position
where thimble (12) is at highest
point of its travel then withdraw shaft
from pump body.
Relief valve insert (9) can be
bumped out of top of pump after removing
top and bottom plugs, ball,
spring and plunger (11).
Plungers and cylinder bores must be
free of roughness or deep scratches.
Recommended plunger to cylinder
clearance is .0002. Check cam followers
for wear or roughness and reject
any rollers which have more than .010
clearance on journal pin. Check the
valve seats and balls for grooves, pitting
or other leak producing conditions
oil leakage occurring between
control shaft and its bore in body will
show up at drilled passage between
plungers in line with control shaft
bore.
321. OVERHAUL AND TEST. If
valve seat inserts were removed by
bumping, new inserts will probably be
needed.
CONTROL SHAFT. Assemble the
control shaft to the lever so that
stop for adjusting screw in lever is
toward fiat on control shaft. Insert
shaft ihto body with flat on shaft up
and with torsion spring wound Vz turn
so as to return the control shaft to
*'hold" position.
RELIEF VALVE. With control shaft
in lowering position install in order
thimble (12), spring (32) and plunger
(11). Before installing the seat insert,
seat the ball to same by tapping
lightly with a hammer and soft drift.
Install the seat insert, drop ball into
cupped end of plunger then carefully
press seat into body until top of insert
(9) is 9/16 inch below top of hole.
DISCHARGE VALVES. Press or
bump discharge valve seat insert into
pump body until it bottoms. Discharge
valve plugs of three different lengths.
Fig. AC162, have been used in the
three different pump bodies used at
various times during the production
of the B and C tractors. When the correct
plug is used the ball end of same
will contact the spring and hold the
ball on its seat when plug is screwed
all the way down. If ball rattles when
pump is shaken or if plug cannot be
screwed all the way to its seat on
pump body the plug is incorrect for
that particular pump. The different
plugs are procurable under number
213471 short; 213005 medium; 211360
long.
INLET VALVES. Install seat inserts
up into body until top of insert pin
just clears the plunger spring (17).

Found a sweet answer to the problem. Sheared off pin for control shaft and plate. Gonna clean it up, put it bach together and see what happens

Bill, I copied it right from a PDF file of the B repair manual. The only problem is it has all the numbered parts but no picture to show what parts go with what number.

Well, pump is on and it works awesome!!!!!!!!  took a while to get the air worked out, hose for snow plow is really long.  im tired, tractor works, got cattle vaxinated this afternoon, time to go rest and then take the B to the wood tomorrow and cut firewood!!!!  work on pictures tomorrow sorry guys.

this is the debris that came out of the trans/ rear end

Here is my parts holder, works awesome, and the pump back on the tractor!!!!!

Rockybottom,