If you operate hydraulic equipment in Alaska, winter is brutal on your fluid power system. Cold fluid is thick. Thick fluid cavitates pumps, blows hoses on cold-shock and tears seals. Here's what we tell our customers.
Use the right fluid
Most OEMs spec a multi-grade hydraulic fluid for cold operation — typically ISO VG 32 or a synthetic. Don't run summer-weight fluid through winter.
Warm up — properly
Idle warm-ups don't cut it. Cycle every function slowly to circulate warm fluid through every cylinder, valve and hose. Five to ten minutes of light cycling is worth more than 30 minutes of idle.
Inspect hoses cold
Hose covers crack when they're stiff and stressed. Walk the equipment cold and look for cover damage you'd miss in summer.
Check filtration
Cold fluid increases bypass on filters. Change them on a tighter winter interval.
Watch your fittings
Thermal cycling loosens fittings. A quick re-torque pass at the start of winter saves a lot of leaks later.
If something feels off, stop
A pump that whines on a cold start is cavitating. Keep running it and you'll be replacing it, not just servicing it.
We service all of this for Alaska fleets. Ask about winter PM contracts.