Unic URW295CR - Derrick Cylinder Operations; Oil Flow When Derrick Cylinder is Lowering

15.1 Flowofoil,whenlowering
Hezagonsocketheadscrew
ForgrandBushomissionstop
Rod
Apply"LockTight"638"here
Pressureoil
Thespoolopens
accordingtothe
reductionside
pilotpressure
Hezagonsocketheadscrew
Forpistonturnstop
Piston
Apply"Locktight#2701"With"Curingaccelerator
#7649"Iftheaddeleraterisnotused,
donotflowoftheagent.Afterthescrewis
tightened,hitwithapinchat2placeson
itscircumference.
Tunk
Thecheckvalveshuts andthe
amountofoilthatreturnstothe
tankislimited.


（１５−１）
Apply"Locktight#2701"With"Curingaccelerator
#7649"Iftheaddeleraterisnotused,
donotflowoftheagent.Afterthescrewis
tightened,hitwithapinchat2placeson
itscircumference.
Counter‑balancevalve