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Old 01-23-2005, 04:39 PM
bowtie_guy's Avatar
bowtie_guy bowtie_guy is offline
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Join Date: Dec 2003
Location: Sudbury, Ontario, Canada
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Fluid change on a Boss plow

I ran a search but not too much specific about the boss plow.

I just bought my plow this season and the previous owner never changed the oil, I asked and he said never since he got it. The plow is approx 6 years off it's a boss straight blade with the RT II hook up.

I know the pump has a drain plug but what is the best way to drain the angle cylinders?? Also how much fluid will I need to get to re-fill the system? Should I just warm up the fluid and then drain, install the plug and refill with the idea it's good to go or should I somehow flush the system??

Thanks for the info!!
C.W. Adams Contracting
2006 Chevrolet Silverado 3500 SRW
Reg Cab, Long Box
LBZ Duramax, 6 Speed Allison Auto
Tuned with EFI LIVE
8' Boss Superduty with wings!!
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Old 01-23-2005, 04:49 PM
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IndySnowPlow IndySnowPlow is offline
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Join Date: Dec 2004
Location: Indiana
Posts: 214
Drain the main pump clean & fill.

Remove the hose at each ram, remove fitting and then work the blade in to completly compress fluid out of the ram. Use a small tip funnel to refill ram with it fully extended to reduce air in the system.

Remove air from system ( bleed ) and fill as necessary.
6 Fulltime plow trucks ( 24/7 )
SnowEx Salters
BOSS- Meyers-Western
Area - Indianapolis, Indiana
Type - Property Care & Maintenance Company

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Old 01-23-2005, 05:51 PM
04superduty 04superduty is offline
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Join Date: Jan 2004
Location: Otsego/Kalamazoo, Michigan
Posts: 1,354
you may want to replace the screens inside the reservoir. there are two of them. its not hard at all.
first you need to unhook the plow from your truck. then you make sure to mark then un hook all the hydraulic lines from the top of the manifold. next drain the fluid out. then unhook the up/down cylinder and lay the tower backward until it stops. pull the pump cover off. remove and mark the 2 lines that go from the pump to the manifold. remove the power leads to the pump. remove the 4 bolts holding the pump/reservoir inside the tower. remove the fill elbow on the side of the tower. pull the pump/ reservoir out. remove the 4 bolts holding the reservoir to the pump and pull it apart. it could get messy with hydraulic fluid going everywhere. check the screens out, but you should probably replace them.
06 Mega cab CTD, 9'2" boss v blade.
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