New Leader NL345/MULTAPPLIER, Operator'S Manual

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NL345
www.NewLeader.com
(800) 363-1771
312884-AA-C
Lubrication & Maintenance
Trailer Brakes
WARNING!
Perform maintenance on level surface with wheels blocked� There is no parking brake
on the TR3000� Block the wheels prior to unhitching or any maintenance of the TR3000�
Uncontrolled movement of the trailer could cause death or serious injury�
Using sight window on drums’ dust shields, adjust brakes, tighten slack adjuster until brake pads touch
brake drums, then back off 1/4 turn�
Brake noise and/or sluggish brake response may indicate air in the brake line� To correct this problem
perform the bleeding procedure listed below�
Bleeding Procedure:
Modulate tractor brakes to low pressure and flow.
On top of rams, loosen bleeder plugs to fill system.
Attach supply line to tractor� Press brake pedal or operate a pump to charge system�
DANGER
Do not check leaks with hands while system is operating as high pressure leaks can
be dangerous! If skin is pierced with hydraulic fluid at high pressure seek immediate
medical attention as fluid injected into the skin could cause gangrene if left untreated.
Relieve pressure before disconnecting hydraulic lines or working with system� Make
sure all hydraulic fluid connections are tight and all hydraulic hoses and lines are in good
condition before applying pressure to the system� Wear protective gloves and safety
glasses or goggles when working with hydraulic systems�
When fluid is seeping from bleeder holes, release brake pedal or turn off hydraulic power unit pump and
install bleeder plugs�
Loosen one bleeder plug a 1/2 turn and apply brakes to remove remaining air�
Tighten bleeder plug�
Make sure ram is free of air�
Complete steps 5-7 for all four rams�
Allow system to set for five or more minutes. This will allow any additional trapped air to rise to the top
of the system�
Break the line at the highest point� This is located in the center of the bulkhead assembly�
NOTICE!
Fittings must be tightened under hydraulic pressure or air may be drawn back into system�
Apply pressure to brake to remove any air from
the system and tighten fittings.
Apply brakes and check for leaks� Make sure all
rams are fully extended while applying braking
force to brake drums� If done correctly, the ram and
slack adjuster will be at 90° to each other (Figure 8)�
The ram should extend approximately 1 1/2 inch
(38 mm) to 1 3/4 inch (44 mm)�
If brakes chatter or rams do not fully extend
repeat steps 5-12�
When complete, rams must be fully retracted�
34.00 38.00
A
A B
B
E
INSTALL WITH SHORTER
LEG OF WALKING BEAM
TO REAR OF TRAILER
1
7
6
7 6
38,45
28,39,44
29,40,47
30,46
D
68
68
120
121
123
122
124
115
114
116
112
113
111
117
110
109
43
41 49 37
85
106
118 42 48
119
48
148
C
133
133
95 45 38
94
134
156 58
SLACK
ADJUSTER
RAM
34
31
32
33
2
5
36
60 59
1,48,61,62
Figure 8