Toro 2020, 5020, 3020 service manual Hydrostat SP

Hydrostat (SP 5020)

35									15
									14 11
31					3
				2				13
34								12
				1				16
RIGHT	7						12		17
	2				2	5	14		18
6							13
FRONT				36			15		15
			2						13
7					1011
			6
			7
20			9					13 12	12
			8
							19
							15
9
11
			21	33
		22			32
27			22
		23			31
		24	23
			24			30
28
29			25

Figure 33

1.	Hydraulic hose (to front motor)	13.	Coupler spacer	25.	Hydraulic hose (from oil cooler)
2.	O–ring	14.	Rubber coupler	26.	Not used
3.	Hydraulic tube	15.	Cap screw	27.	Fan hub
4.	Not used	16.	Coupling	28.	Cooling fan
5.	Hydraulic tube	17.	Square key	29.	Cap screw
6.	90o hydraulic fitting	18.	Engine hub	30.	Hydraulic hose (from oil filter)
7.	O–ring	19.	Pump hub	31.	Hose clamp
8.	Hydrostat	20.	Socket head screw	32.	90o hydraulic fitting
9.	Woodruff key	21.	Hydraulic hose (To lift valve)	33.	O–ring
10.	Lock nut	22.	O–ring	34.	45o hydraulic fitting
11.	Set screw	23.	90o hydraulic fitting	35.	Hydraulic hose (to tank)
12.	Hex nut	24.	O–ring	36.	Hydraulic hose (from rear motors)

Removal (Fig. 33)

1.Before removing any parts from the hydraulic sys- tem, park machine on a level surface, set brake, lower attachment, and stop engine.

CAUTION

Operate all hydraulic controls to relieve system pressure and avoid injury from pressurized hy- draulic oil. Controls must be operated with the ignition switch in OFF. Remove key from the igni- tion switch.

2.Pivot seat up. Remove left and right side panels from the machine. Remove left fender and seat (see Left Fender (Seat Base) Removal in Chapter 6 – Wheels, Brakes, and Miscellaneous).

CAUTION

The muffler and exhaust pipe may be hot. To avoid possible burns, allow engine and exhaust system to cool before working near the muffler.

3.Disconnect wire harness as follows: disconnect blue wire from magneto terminal, disconnect blue wire from voltage regulator, disconnect red/white wire from fuel solenoid (Fig. 45).

4.Disconnect red positive cable cable (solenoid) from the starter. Remove lock nut and cap screw securing black ground wire and black battery cable (negative) to the engine block. Pull cable and harness clear of the en- gine (Fig. 47).

Hydraulic System (Rev. A) Page 4 – 44 Sand Pro 2020/3020/5020