Winget 200TM, Workshop Manual

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WORKSHOP MANUAL
Winget Mechanically Fed Mixers
Models: 200TM
From 1998
Using a suitable tool replace the nylon bushes in the roller, coat the bushes, pin and
bosses on the pivot operating bracket with anti-seize compound and locate the roller
into the bracket. Insert the pivot pin and secure using the small grubscrew.
Coat the hopper ram pivot pin with anti-seize compound and supporting the cradle
with suitable lifting equipment start the engine/motor extend the hopper ram piston
and insert the pin securing the ram to the cradle. Retain the pin using the bolt and
binx nut. Ensure the grease nipples are accessible. Stop the engine/motor.
Refit the hopper as previously described.
Hydraulic Control Valve
The hydraulic control valve is attached to the inner face of the water tank support and
is protected by a removable cover.
The valve contains an adjustable relief valve and in the case of a machine with a
dragline a HPCO option.
To Check the Hydraulic Pressure.
Check the hydraulic oil level and connect a tee piece into the hydraulic circuit
between the control valve and hopper ram, attach a 0-3000psi pressure gauge to the
tee piece, ensure the stabiliser legs and struts are fitted.
Start and run the engine/motor until the hydraulic oil is up to normal working
temperature, check the engine speed it should read 1500 rpm, another way is to
count the drum revolutions, the drum should rotate at 22 rpm.
On later machines disconnect the return hose attached to the upper part of the ram
cylinder. On earlier machines simply observe the open to atmosphere breather hole
in the cylinder as the control valve is operated to extend the piston and raise the
hopper. Note if excessive oil is ejected from the cylinder, if so the ram seals should
be replaced or the ram repaired as necessary prior to the pressures being checked.
Raise the hopper until the relief valve “blows off”, check the maximum pressure
recorded on the gauge. If necessary adjust the relief valve to give a maximum
pressure of 2
150
psi. Following adjustment tighten the relief valve locking nut to
prevent oil leaks. Lower the hopper and stop the engine/motor disperse any residual
hydraulic pressure and remove the tee piece and pressure gauge.
Blowing off the relief valve on EC machines fitted with a hose burst valve may cause
the valve to “lock out” preventing the hopper from lowering. To release a locked
valve operate the control lever to slowly raise the hopper, releasing the hose failure
valve, then gently operate the lever to slowly lower the hopper approximately 150mm
following which the hopper can be lowered in the normal manner.