Page 1
Shock Valve Kit
100 and 200 Series Z Masters
Part No. 106–2053
Form No. 3327–812
Installation Instructions
This service kit is designed for the replacement or the
addition of the Hydro–Gear Shock Valve relief valve
cartridges in the hydro pumps on Toro 100 and 200 Series
Z Master units.
Note: This kit contains the parts required for one pump.
Two kits are needed when updating both pumps on a
machine.
Loose Parts
Note: Use the chart below to identify parts for assembly.
DESCRIPTION QTY. USE
Shock valve, .024 in. orifice
Shock valve, no orifice
Spring
Valve cap
Note: Determine the left and right sides of the machine
from the normal operating position.
Before Installing this Kit
Important Use extreme care to ensure the hydraulic
system is not contaminated.
Particles as small as lint, dust, or human hair have the
potential to cause failure of the hydraulic system.
Take care removing and installing these components to
protect the integrity of the system.
1. Thoroughly clean the area around both hydraulic
pumps.
1
1
Installing the shock valves
2
2
Warning
Incorrect battery cable routing could damage the
machine and cables causing sparks. Sparks can
cause the battery gasses to explode, resulting in
personal injury.
• Always Disconnect the negative (black) battery
cable before disconnecting the positive (red)
cable.
• Always Reconnect the positive (red) battery
cable before reconnecting the negative (black)
cable .
Note: Up to 4 fl. oz. of hydraulic oil can be lost per pump
while installing this kit.
2. Place a pan under each hydraulic pump.
Important Wear protective equipment while installing
this kit. Avoid any contact of the hydraulic oil with eyes
or continuous contact with skin.
2002 by The Toro Company
8111 Lyndale Avenue South
Bloomington, MN 55420-1196
All Rights Reserved
1
Printed in the USA
Page 2
Warning
Hydraulic fluid escaping under pressure can
penetrate skin and cause injury.
• If hydraulic fluid is injected into the skin it
must be surgically removed within a few hours
by a doctor familiar with this type of injury.
Gangrene may result if this is not done.
• Keep body and hands away from pin hole leaks
or nozzles that eject high pressure hydraulic
fluid.
• Use cardboard or paper to find hydraulic leaks.
• Safely relieve all pressure in the hydraulic
system before performing any work on the
hydraulic system.
• Make sure all hydraulic fluid hoses and lines
are in good condition and all hydraulic
connections and fittings are tight before
applying pressure to hydraulic system.
Using the Correct Shock Valve
There are two types of shock valves for this installation.
• One has no orifice or hole and text markings of 200
and 000 (Fig. 1).
• One has a very small .024 in. hole or orifice and text
markings of 200 and 024 (Fig. 1).
1
4
1. Shock valve with an orifice
2. Shock valve with no orifice
3. 200 and 000 markings
5
Figure 1
4. 200 and 024 markings
5. .024 in. orifice
6. No orifice
6
2
3
m–6100
2
Page 3
Finding the Correct Machine and Pump in the following Table
This instruction sheet provides separate instructions for
the installation of the shock valves in Z Masters listed in
the following table.
1. Determine if you have a 100 or 200 series Z Master.
2. Identify the serial number on the Z Master.
3. Identify the the pump model number.
Hydro–Gear Pumps
BDP–10L–121P BDP–10A–414 BDP–10A–433 BDP–10A–427
100 Series
Z Master
Z Master Serial Number
210999999 and Lower
Z Master Serial number
220000001 and Up with
Hydro–Gear pump date
See page 4 for
code 1275 and Up
instructions.
See page 6 for
instructions.
200 Series
Z Master
Z Master Serial Number
210999999 and Lower
See page 8 for
instructions.
N/A
4. Identify the serial number on the pumps. See
Identifying the Pumps on page 3.
5. If needed, identify the date code in the pump serial
number. See Identifying the Pumps on page 3.
6. Refer to the appropriate instruction page, as listed in
the table section, for your machine and pump.
N/A N/A
1
Z Master Serial number
210000001
Z Master Serial number
22000XXXX and Up
–22000XXXX and
Lower with Hydro–
Gear pump date code
1275 and Up
1
See page 12 for correct
models and serial
numbers.
See page 10 for correct
models and serial
numbers.
1
only BDP–10A pumps with a date code 1275 and greater are compatible with Shock Valves. The date code is the first four digits of the four–part
number in the lower left corner of the Hydro–Gear label. Ex) 0 131 P1 476 – the date code of this pump would be 0131.
1
Indentifying the Pumps
The following is an example of the Hydro–Gear label.
The information on this label is needed for determining
which pump you have on your machine (Fig. 2).
The date code is the first four digits of the four–part
Hydro–Gear
Model
Number
3
Year Built
Serial Number
number in the lower left corner of the Hydro–Gear label.
An example is 0 131 P1 476. The date code of this pump
Date
would be 0131 (Fig. 2).
1. Locate this label on one of the pumps in your machine.
Type of Product and Build Information
m–6084
Figure 2
1. Label
2. Model Number
3. Date code—first four digits
2
3
Page 4
Installing the Shock Valves on
a 100 Series Z Master with
Serial Number 210999999 and
Lower
These machines are equipped with the Hydro–Gear
BDP–10L–121P pumps. This model number can be found
on the label on the side of the pump (Fig. 2).
1
5
6
Installing the Shock Valve on the Control
Arm Side
1. Disengage the PTO and set the parking brake.
2. Stop the engine, remove the key, and wait for all
moving parts to stop before leaving the operating
position.
3. Raise the seat and locate the battery.
4. Disconnect the negative battery cable.
Danger
Mechanical or hydraulic jacks may fail to support
machine and cause a serious injury.
• Use jack stands when supporting machine.
• Do not use hydraulic jacks.
5. For the left–hand pump only, remove the left rear tire.
Note: An extension on an Allen wrench socket may be
needed to gain access to the system check plug on the left
pump.
7
4
3
1. Left side of pump
2. Check plug
3. Spring
4. Ball
2
Figure 3
5. Blank shock valve—no
orifice
6. Valve cap
7. Control arm
m–6033
Installing the Shock Valve on the Side
Opposite the Control Arm
1. Remove the system check plug in the pump, on the
side opposite of the control arm (Fig. 4).
Note: This assembly will contain a spring and poppet
rather than a spring and ball.
2. Use a magnetic screwdriver to remove the spring and
poppet (Fig. 4).
3. Insert the shock valve with the 0.024 in. orifice
(Figures 1 and 4).
6. Remove the system check plug from the control
arm–side of the pump (Fig. 3).
7. Use a magnetic screwdriver to remove the spring and
ball (Fig. 3).
8. Insert the blank shock valve (no orifice)
(Figures 1 and 3).
9. Tighten and torque the valve cap for the shock valve
assembly to 15–20 ft.–lb.
10.Install the left rear tire. Torque lugnuts to 95 ft.–lb.
(128 NM).
4. Tighten and torque the valve cap for the shock valve
assembly to 15–20 ft.–lb.
5. Fill the hydraulic reservoir with Mobil 1 15W–50, or
equivalent oil, to the top of the baffle in the tank.
6. Connect the negative battery cable, lower the seat,
start the engine, and drive the unit for 5 to 10 minutes
to purge the air out of the hydraulic system.
7. Shut the machine off and allow system to cool for 15
minutes.
8. Check the hydraulic oil level and add hydraulic oil if
necessary.
4
Page 5
1
6
5
1. Pump—non–control a r m
side
2. Check plug
3. Spring
4
Figure 4
3
2
m–6034
4. Poppet
5. Shock valve—.024 in.
orifice
6. Valve cap
5
Page 6
Installing the Shock Valves on
a 100 Series Z Master with
Serial Number 220000001 and
Up
These units are equipped with the Hydro–Gear
BDP–10A–414 pumps. This model number can be found
on the label on the side of the pump (Fig. 2).
Important Pumps with a date code of 1274 and lower
are not compatible with this Shock Valve kit. Do not
install this kit into these pumps.
14.For the right pump only, remove the bolt from the end
of the case drain hose and slide the hose onto the
beaded tube of the adapter (Fig. 5).
15.Install the hose clamp (Fig. 5).
1
5
9
67
3
Important Only pumps with a date code of 1275 or
higher are compatible with this Shock Valve kit.
Installing the Shock Valve on the Control
Arm Side
1. Disengage the PTO and set the parking brake.
2. Stop the engine, remove the key, and wait for all
moving parts to stop before leaving the operating
position.
3. Raise the seat and locate the battery.
4. Disconnect the negative battery cable.
5. For the right pump only, loosen the hose clamp on the
case drain hose and slide the clamp down the hose
about 2–1/2 in. (Fig. 5).
6. For the right pump only, pull the hose off of the
beaded tube adapter (Fig. 5).
7. For the right pump only, place a clean bolt in the end
of the hose and elevate this end as high as possible to
slow leaking fluid.
Note: Take note of the adapter’s angular position. This is
the correct position when installed again.
8. For the right pump only, loosen the jam nut on the
adapter, and rotate the adapter counterclockwise until
the beaded tube end is pointing upward.
9. Remove the system check plug (Fig. 5).
10.Using a magnetic screwdriver, remove the spring and
poppet (Fig. 5).
11. Insert the blank shock valve (no orifice)
(Figures 1 and 5).
12.Tighten and torque the valve cap for the shock valve
assembly to 15–20 ft.–lb.
13.For the right pump only, rotate the adapter clockwise
to its original position and then tighten and torque the
jam nut to 15–17 ft.–lb.
4
10
8
Figure 5
1. Right side of pump
2. Check plug
3. Spring
4. Poppet
5. Blank shock valve—no
orifice
6. Hose—right pump only
2
m–6035
7. Hose clamp—right pump
only
8. Beaded tube
adapter—right pump only
9. Valve cap
10. Control arm
Installing the Shock Valve on the Side
Opposite the Control Arm
Danger
Mechanical or hydraulic jacks may fail to support
machine and cause a serious injury.
• Use jack stands when supporting machine.
• Do not use hydraulic jacks.
1. For the left pump only, remove the left rear tire.
Note: An extension on an Allen wrench socket may be
needed to gain access to the system check plug on the left
pump.
1. Remove the system check plug in the pump, on the
side opposite of the control arm (Fig. 6).
2. Use a magnetic screwdriver to remove the spring and
poppet (Fig. 6).
3. Insert the shock valve with the 0.024 in. orifice
(Fig. 6).
4. Tighten and torque the valve cap for the shock valve
assembly to 15–20 ft.–lb.
5. For the left pump only, install the left rear tire.
6
Page 7
6. Fill the hydraulic reservoir with Mobil 1 15W–50, or
equivalent oil, to the step marked Cold on the baffle in
the tank.
7. Connect the negative battery cable, lower the seat,
start the engine, and drive the unit for 5 to 10 minutes
to purge the air out of the hydraulic system.
8. Shut the machine off and allow system to cool for 15
minutes.
9. Check the hydraulic oil level and add hydraulic oil if
necessary.
1
6
1. Pump—non–control a r m
side
2. Check plug
3. Spring
4
2
Figure 6
5
m–6036
4. Poppet
5. Shock valve—.024 in.
orifice
6. Valve cap
7
Page 8
Installing the Shock Valves on
a 200 Series Z Master with
Serial Number 210999999 and
lower
1
6
8
11
9
7
These units are equipped with the Hydro–Gear
BDP–10L–121P pumps. This model number can be found
on the label on the side of the pump (Fig. 2).
Installing the Shock Valve on the Control
Arm Side
1. Disengage the PTO and set the parking brake.
2. Stop the engine, remove the key, and wait for all
moving parts to stop before leaving the operating
position.
3. Raise the seat and locate the battery.
4. Disconnect the negative battery cable.
5. Remove the nut, washer and bolt from the ball joint
and linkage and the pump control arm (Fig. 7). This
will allow access to the system check plug on the
control arm–side of the pump.
6. Remove the high–pressure hose on the control
arm–side of the pump (Fig. 7). This will prevent the
check ball from falling down into the hose while it is
being removed.
Note: An extension on an Allen wrench socket may be
needed to gain access to the system check plug on the left
pump.
7. For the left pump only, remove the left rear tire.
8. Remove the system check plug from the control
arm–side of the pump (Fig. 7).
12
5
4
m–6037
1. Pump—control arm side
2. Check plug
3. Spring
4. Ball
5. Blank shock valve—no
orifice
6. Bolt
10
Figure 7
3
2
7. Nut
8. Ball joint and linkage
9. Pump control arm
10. High–pressure hose
11. Washer
12. Valve cap
Installing the Shock Valve on the Side
Opposite the Control Arm
Note: For the left pump, the hydraulic reservoir may need
to be moved to gain access to the system check valve.
Danger
Mechanical or hydraulic jacks may fail to support
machine and cause a serious injury.
• Use jack stands when supporting machine.
• Do not use hydraulic jacks.
9. Use a magnetic screwdriver to remove the spring and
ball (Fig. 7).
10.Insert the blank shock valve (no orifice)
(Figures 1 and 7).
11. Tighten and torque the valve cap for the shock valve
assembly to 15–20 ft.–lb.
12.For the left pump only, install the left rear tire.
13.Connect the high–pressure hose to the pump. Torque it
to 21–24 ft.–lb.
14.Reconnect the ball joint and linkage to the pump
control arm (Fig. 7).
15.For the left pump only, install the left rear tire. Torque
lugnuts to 95 ft–lb (128 NM).
1. For the right pump only, remove the right rear tire.
Note: An extension on an Allen wrench may be needed to
gain access to the system check plug on the right pump.
2. Remove the system check plug in the pump, on side
opposite the control arm (Fig. 8).
3. Use a magnetic screwdriver to remove the spring and
poppet (Fig. 8).
4. Insert the shock valve with the 0.024 in. orifice
(Fig. 8).
5. Tighten and torque the valve cap for the shock valve
assembly to 15–20 ft.–lb.
6. For the right pump only, install the right rear tire.
Torque lugnuts to 95 ft–lb (128 NM).
7. Fill the hydraulic reservoir with Mobil 1 15W–50, or
equivalent oil, to the top of the baffle in the tank.
8
Page 9
8. Connect the negative battery cable, lower the seat,
start the engine, and drive the unit for 5 to 10 minutes
to purge the air out of the hydraulic system.
9. Shut the machine off and allow system to cool for 15
minutes.
10.Check the hydraulic oil level and add hydraulic oil if
necessary.
1
6
5
4
3
2
m–6038
Figure 8
1. Pump—non–control a r m
side
2. Check plug
3. Spring
4. Poppet
5. Shock valve—.024 in.
orifice
6. Valve cap
9
Page 10
Installing the Shock Valves on
a 200 Series Z Master with
Serial Number
220000001–22000XXXX and
Lower
These units are equipped with the Hydro–Gear
BDP–10A–433 pumps. This model number can be found
on the label on the side of the pump (Fig. 2).
The following 200 Series Z Masters use these instructions.
• Model No. 74213—Serial No. 220000606 and Lower
• Model No. 74214—Serial No. 220000338 and Lower
If the valve cap uses an 11/16 inch wrench, it contains a
shock valve; refer to instructions starting on page 12
(Fig. 9).
• Model No. 74225—Serial No. 220001151 and Lower
• Model No. 74226—Serial No. 220001025 and Lower
• Model No. 74227—Serial No. 220000150 and Lower
• Model No. 74228—Serial No. 220000250 and Lower
• Model No. 74233—Serial No. 220000254 and Lower
• Model No. 74234—Serial No. 220000312 and Lower
• Model No. 74235—Serial No. 220000174 and Lower
• Model No. 74236—Serial No. 220000200 and Lower
• Model No. 74240—Serial No. 220000282 and Lower
• Model No. 74241—Serial No. 220000193 and Lower
Important Pumps with a date code of 1274 or lower
are not compatible with this Shock Valve kit. Do not
install this kit into these pumps.
Important Pumps with a date code of 1275 or higher
are compatible with this Shock Valve kit.
If the date code is 1275 or higher, install only the 0.024
orifice shock valve into the side opposite the control
arm.
4
3
1. Pump—control arm side
2. Valve cap
2
Figure 9
3. SCR Valve—do not
4. Control arm
1
remove
Installing the Shock Valve on the Side
Opposite the Control Arm
Install the 0.024 orifice shock valve only into the side
opposite the control arm.
1. Disengage the PTO and set the parking brake.
2. Stop the engine, remove the key, and wait for all
moving parts to stop before leaving the operating
position.
3. Raise the seat and locate the battery.
4. Disconnect the negative battery cable.
5. Remove the pump drive belt.
m–6124
Checking for the System Check Relief
(SCR) Valve
The SCR valve can not be replaced with a shock valve.
1. Check the valve cap on the control arm side of the
pump.
If the valve cap uses a 7/8 inch wrench, it contains a SCR
Valve (Fig. 9).
Important Do not remove the SCR Valve. Do not
replace it with a shock valve.
6. For the right pump only, loosen, but do not remove,
the nuts on the two pump mounting bolts (Fig. 10).
This will allow access and clearance over the right
frame rail.
7. For the right pump only, tip the pump upward.
8. Remove the system check plug in the pump (Fig. 10).
9. Use a magnetic screwdriver to remove the spring and
poppet (Fig. 10).
10.Insert the shock valve with the 0.024 in. orifice
(Fig. 10).
10
Page 11
11. Tighten and torque the valve cap for the shock valve
assembly to 15–20 ft.–lb.
12.For the right pump only, tighten the nuts on the two
pump mounting bolts (Fig. 10).
13.Install the pump drive belt.
14.Fill the hydraulic reservoir with Mobil 1 15W–50, or
equivalent oil, to the step marked Cold on the baffle in
the tank.
15.Connect the negative battery cable, lower the seat,
start the engine, and drive the unit for 5 to 10 minutes
to purge the air out of the hydraulic system.
16.Shut the machine off and allow system to cool for 15
minutes.
17.Check the hydraulic oil level and add hydraulic oil if
necessary.
7
6
1
8
3
2
1. Pump—non–control a r m
side
2. Check plug
3. Spring
4. Poppet
5
4
m–6039
Figure 10
5. Shock valve—.024 in.
orifice
6. Nut
7. Bolt
8. Valve cap
11
Page 12
Installing the Shock Valves on
a 200 Series Z Master with
Serial Number 22000XXXX and
Up
The following 200 Series Z Masters use these instructions.
• Model No. 74213—Serial No. 220000607 and Up
• Model No. 74214—Serial No. 220000339 and Up
4. Disconnect the negative battery cable.
Note: Steps 5 through 9 can be eliminated if machine is
accessed from underneath.
5. For pumps being accessed from overhead, remove the
nut from the bolt connecting the ball joint and linkage
to the pump control arm (Fig. 11).
6. For pumps being accessed from overhead, loosen the
hose clamp on the case drain hose and slide the clamp
down the hose about 2–1/2 in. (Fig. 11).
• Model No. 74225—Serial No. 220001152 and Up
• Model No. 74226—Serial No. 220001026 and Up
• Model No. 74227—Serial No. 220000151 and Up
• Model No. 74228—Serial No. 220000251 and Up
• Model No. 74233—Serial No. 220000255 and Up
• Model No. 74234—Serial No. 220000313 and Up
• Model No. 74235—Serial No. 220000175 and Up
• Model No. 74236—Serial No. 220000201 and Up
• Model No. 74240—Serial No. 220000283 and Up
• Model No. 74241—Serial No. 220000194 and Up
These units are equipped with the Hydro–Gear
BDP–10A–427 pumps. This model number can be found
on the label on the side of the pump (Fig. 2).
These pumps are equipped with shock valves in both
system check ports at the factory. Replace the shock
valves if a malfunction is observed.
Installing the Shock Valve on the Control
Arm Side
Important It is recommended to access the pumps
from underneath the machine. This will eliminate steps 5
through 9 and 14 through 17.
1. Disengage the PTO and set the parking brake.
2. Stop the engine, remove the key, and wait for all
moving parts to stop before leaving the operating
position.
3. Raise the seat and locate the battery.
7. For pumps being accessed from overhead, pull the
hose off of the beaded tube adapter (Fig. 11).
8. For pumps being accessed from overhead, place a
clean bolt (1/4 in.) in the end of the hose and elevate
this end as high as possible to slow leaking fluid.
Note: Take note of the adapter’s angular position. This is
the correct position when installed again.
9. For pumps being accessed from overhead, loosen the
jam nut on the adapter and rotate the adapter
counterclockwise until the beaded tube end is pointing
upward.
10.Remove the valve cap.
11. Using a magnetic screwdriver, remove the valve
assembly.
12.Insert the blank shock valve (no orifice) (Fig. 11).
13.Tighten and torque the valve cap for the shock valve
assembly to 15–20 ft.–lb.
Note: Steps 14 through 17 can be eliminated if machine is
accessed from underneath.
14.For pumps being accessed from overhead, rotate the
adapter clockwise to its original position and then
tighten and torque the jam nut to 15–17 ft.–lb.
15.For pumps being accessed from overhead, remove the
bolt from the end of the case drain hose and slide the
hose onto the beaded tube of the adapter (Fig. 11).
16.For pumps being accessed from overhead, install the
hose clamp (Fig. 11).
17.For pumps being accessed from overhead, connect the
motion control linkage to the motion control arm on
the pump.
12
Page 13
10.Fill the hydraulic reservoir with Mobil 1 15W–50, or
equivalent oil, to the step marked Cold on the baffle in
1
4
6
9
7
5
the tank.
11. Connect the negative battery cable, lower the seat,
start the engine, and drive the unit for 5 to 10 minutes
to purge the air out of the hydraulic system.
12.Shut the machine off and allow system to cool for 15
minutes.
13.Check the hydraulic oil level and add hydraulic oil if
necessary.
4
3
3
10
2
11
m–6040
Figure 11
1. Pump—control arm side
2. Valve cap
3. Blank shock valve—no
orifice
4. Bolt
5. Nut
6. Ball joint and linkage
7. Pump control arm
8. High–pressure hose
9. Washer
10. Beaded tube adapter
11. Hose clamp
Installing the Shock Valve on the Side
Opposite the Control Arm
1. Remove the pump drive belt.
2. For the right pump only, loosen, but do not remove,
the nuts on the two pump mounting bolts (Fig. 12).
This will allow access and clearance over the right
frame rail.
3. For the right pump only, tip the pump upward.
8
1
2
5
m–6041
Figure 12
1. Pump—non–control a r m
side
2. Shock valve—.024 in.
orifice
3. Nut
4. Bolt
5. Valve cap
4. Remove the valve cap.
5. Using a magnetic screwdriver, remove the valve
assembly.
6. Insert the shock valve with the 0.024 in. orifice
(Fig. 12).
7. Tighten and torque the valve cap for the shock valve
assembly to 15–20 ft.–lb.
8. For the right pump only, tighten the nuts on the two
pump mounting bolts (Fig. 12).
9. Install the pump drive belt.
13
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141516
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