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Fisher HT Series - Operational Tests and Adjustments; Filling the Hydraulic Unit; Blade Drop Speed Adjustment; Final Adjustments and Checks

Fisher HT Series
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Lit. No. 69829, Rev. 01 11 December 15, 2016
69400, 69450, 69450-1, 69450-2
14. Loosen the breather/ ll plug slowly to relieve any
pressure in the reservoir.
15. Remove the hydraulic testing "Tee" tting and
gauge from the lift ram base hose.
16. Reconnect the lift ram base hose and tighten it
securely.
17. Check the hydraulic uid level and add uid if
necessary.
18. Retighten the breather/ ll plug.
19. Replace the hydraulic unit cover.
CAUTION
Do not mix different kinds of hydraulic uid.
Some uids are not compatible and may
cause performance problems and product
damage.
FINAL ADJUSTMENTS
1. With the snowplow attached to the properly
ballasted vehicle and the blade lowered to the
ground, the A-frame should be parallel with the
ground.
2. Fully angle the blade in raised and lowered
positions. Adjust hose ttings and wraps so the
hoses do not contact the vehicle bumper, have no
sharp bends, and are wrapped at contact points
with the headgear and blade.

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