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All Rights Reserved
Printed in the USA
2001 by The Toro Company
8111 Lyndale Avenue South
Bloomington, MN 55420-1196
Backhoe Pressure Kit
Dingo Backhoe with Dingo 420TX or 425TX Traction Units
Part No. 104-5945
Form No. 3327-813
Installation Instructions
Hydraulic fluid escaping under pressure can
penetrate skin and cause injury. Fluid injected
into the skin must be surgically removed within a
few hours by a doctor familiar with this form of
injury or gangrene may result.
• Keep your body and hands away from pin hole
leaks or nozzles that eject high pressure
hydraulic fluid.
• Use cardboard or paper to find hydraulic leaks,
never use your hands.
• Wear eye protection while performing this
procedure.
Warning
Hydraulic couplers, hydraulic lines/valves, and
hydraulic fluid may be hot. If you contact hot
components you may be burned.
• Wear gloves when operating the hydraulic
couplers.
• Allow the traction unit to cool before touching
hydraulic components.
• Do not touch hydraulic fluid spills.
Caution
Loose Parts
Description Qty. Use
Check valve
Adapter
Hose
Elbow fitting
Cable tie
1
1
2
2
1
Installing the new hoses
Installing the Kit
1. Disconnect the backhoe hydraulic couplers from the
traction unit.
2. Remove the 6 bolts securing the controls access panel
and remove the panel (Fig. 1).
3. Prepare a pan near the back of the backhoe to catch
oil.
4. Cut the plastic tie securing the hoses.
m–4587
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Figure 1
1. Controls access panel
5. Remove the female coupler and 90 deg. fitting from
the hose, draining the oil into the pan (Fig. 2).
6. Save the female coupler and discard the 90 deg.
fitting.
2
m-5664
1
2
3
4
Figure 2
1. Control block
2. Female coupler
3. Male coupler
4. Remove and discard
these components
7. Pull the female hose through the backhoe body to the
front of the backhoe.
8. Disconnect and discard the hose, check valve, and
fittings from the control block (Fig. 2).
9. Install the check valve into the opening in the control
block from where you removed the hose. The arrow
on the valve must point away from the control block
(Fig. 3).
m-5665
1
2
3
4
56
7
Figure 3
1. Control block
2. Female coupler
3. Male coupler
4. Check valve
5. Hoses
6. Adapter
7. Elbow fittings
10.Install the elbow joint of a new hose to the check valve
(Fig. 3).
11. Route the hose through the backhoe body (Fig. 3).
12.Install a new 90 deg. fitting to the end of the hose
(Fig. 3).
Important Ensure that you orient the 90 deg. fitting so
that the coupler will be facing the traction unit when you
connect the hose to the traction unit couplers.
13.Install the female coupler removed previously to the
elbow fitting on the hose (Fig. 3).
14.Remove the male coupler and 90 deg. fitting from the
other hose, draining the oil into the pan (Fig. 2).
15.Save the male coupler and discard the 90 deg. fitting.
16.Pull the male hose through the backhoe body to the
front of the backhoe.
17.Disconnect and discard the hose and fittings from the
control block (Fig. 2).
18.Install the new adapter into the opening in the control
block from where you removed the hose (Fig. 3).
19.Install the elbow joint of the new hose to the new
adapter (Fig. 3).
20.Route the hose through the backhoe body (Fig. 3).
21.Install a new 90 deg. fitting to the end of the hose
(Fig. 3).
Important Ensure that you orient the 90 deg. fitting so
that the coupler will be facing the traction unit when you
connect the hose to the traction unit couplers.
22.Install the male coupler removed previously to the
elbow fitting on the hose (Fig. 3).
23.Secure the hoses using the plastic tie provided.
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