Hydraulic Pump; Structure Of Hydraulic Pump; Operation - Cub Cadet 8354 Service Manual

CHAPTER 9 8354/8404

4. HYDRAULIC PUMP

4.1 STRUCTURE OF HYDRAULIC PUMP

(1) Snap Ring
(2) Bearing
(3) Cover (Front)
(4) Seal Ring
(5) Pin
(6) 1st Pump

4.2 OPERATION

A. The hydraulic pump provides constant oil flow to
operate the steering wheel and hydraulic cylinder.
The hydraulic assembly consists of two pumps hav-
ing different displacements.
B. Two pumps operate equally and use a outside gear
design to move the amount of fluid determined at
each rotation and positive displacement.
C. Oil inflow and outflow continues while driving hy-
draulic pump from engine cam shaft, drive gear and
rotating pump gear (3). When gear is disconnected,
the vacuum will be made to enable oil inflow (1) to
pump. As gear rotated, oil continues to flow.
9-6
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(7) Seal Ring
(8) Seal Ring
(9) Bushing
(10) Drive Gear Shaft 1
(11) Passive Gear 1
(12) Coupling
(13) Cover
(14) Seal Ring
(15) Seal Ring
(16) Bushing
(17) Drive Gear Shaft 2
(18) Passive Gear
(1) Inflow to Pump
(2) Bushing
(3) Gear
23
22
21
615W905A
(19) Seal Ring
(20) 2nd Pump
(21) Cover
(22) Spring Washer
(23) Bolt
615W906A
(4) Outflow From Pump
(5) Pump Housing
(6) Drive Shaft
D615-W02 May-2003