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11

Operations

Tire Pressure

Proper air pressure for your tires is printed on the 
sidewall. Check pressure while tires are cold. Do not 
raise or lower pressure to meet load. Pressure other 
than recommended pressure will lead to excessive tire 
wear or tire failure. 

Balancing recommended.

 

Wheels

Check wheels for hole 
elongation or “out of round”. 
This condition can be caused by 
lug nuts not being tight or being 
too tight.  Trailer wheels can be 
damaged by chuck holes or 
curb jumping. You may not be 
aware of the road shock to the wheels without periodic 
checks. Replace any wheel that is bent. Replace any 
wheel if you see elongation of the bolt holes.

Wheel Lugs

Wheel lug nuts must be tightened with a torque wrench. 
Refer to the chart below for proper torque.

1.

Start all bolts or nuts by hand to prevent cross 
threading.

2.

Tighten bolts or nuts following sequence at right.

3.

The tightening of the fasteners should be done in 
stages. Following the recommended sequence, 
tighten fasteners per wheel torque chart below.

4.

Wheel nuts/bolts should be torqued before first 
road use and after each wheel removal. Check and 
re-torque after the first 10 miles, 25 miles and 
again at 50 miles. Check periodically thereafter.

Ball Coupler Hitches

Coupler assembly includes a latch lever and latch lever 
safety pin or hitch pin. Be sure the latch lever is locked 
and the pin properly secured before moving your trailer. 
The pin can be engaged fully only if ball is properly 
seated in the coupler.

Tires

Before mounting tires onto wheels make certain that 
the rim size and contour is approved for the tire as 
shown in the Tire and Rim Association Yearbook or the 
tire manufacturer’s catalog. Also make sure the tire will 
carry the rated load. If the load is not equal on all tires 
due to trailer weight distribution, use the tire rated for 
the heaviest wheel position.

Note: The capacity rating molded into the sidewall of 
the tire is not always the proper rating for the tire if used 
in a trailer application. Use the following guideline:

1.

LT and ST tires: use the capacity rating molded into 
the tire.

2.

Passenger Car Tires: Use the capacity rating 
molded into the tire sidewall divided by 1.10.

Use tire mounting procedures as outlined by the 
Rubber Manufacturer’s Association or the tire manufac-
turers.

NOTE: Tire wear should be checked frequently 
because once a wear pattern becomes firmly 
established in a tire it is difficult to stop, even if the 
underlying cause is corrected.

Wheel Torque Requirements

Wheel Size

Torque Sequence

1st Stage

2nd Stage

3rd Stage

15”

20-25

50-60

80-90

1

2

3

4

5

WEAR PATTERN

CAUSE

ACTION

ACTION

Center 

Wear

Over  

Inflation

Adjust pressure 
to particular 
load per tire 
catalog.

Edge 
Wear

Under  

Inflation

Adjust pressure 
to particular 
load per tire 
catalog.

Side Wear

Loss of 

camber or 

overloading

Make sure load 
doesn't exceed 
axle rating. 
Align at  
alignment shop.

Toe Wear

Incorrect 

 toe-in

Align at  
alignment shop.

Cupping

Out of 

 balance

Check bearing 
adjustment and 
balance tires.

Flat 

Spots

Wheel 

lockup  & tire 

skidding

Avoid sudden 
stops when 
possible and 
adjust brakes.

KÄRCHER TRAILER OPERATORS MANUAL • 9.807-794.0-B

Summary of Contents for 1.103-843.0

Page 1: ...US PRESSION A LA SORTIE Ne pas diriger le jet d eau vers des personnes RIESGO DE PENETRACIÓ N O LESIONES SEVERAS A PERSONAS Man téngase fuera del alcance de boquilla DESCARGA DE AGUA CALIENTE A ALTA PRESION No toque ni dirija el flujo del agua o otras personas RISK OF INURY PROTECTIVE EYEWEAR AND OTHER PROTECTIVE CLOTHING MUST BE WORN when operating this machine RISQUE DE BLESSURE Portez des lunett...

Page 2: ...t that may be required Any modifications or additions including load equalizing hitches without written factory consent usage in an abnormal manner including overloading voids all manufacturers warranties and liability WARNING This Owner s Manual contains safety information and instructions for your trailer You must read this manual before loading or towing your trailer You must follow all safety ...

Page 3: ...itch Coupler Troubleshooting 8 Coupler Ball Engagement 8 Safety Chains 8 Load Carrying Capacity 9 Proper Weight Distribution Tongue Weight 10 Tongue Weight 10 Tire Pressure 11 Wheels 11 Wheel Lugs 11 Ball Coupler Hitches 11 Tires 11 Correct Ball Seating 12 Breakaway Switch D O T Wet Cell Battery 12 Breakaway Switch Mounted on an A Frame 13 Brakes 13 Burnishing the Brakes 13 Brake Adjustment 14 Bra...

Page 4: ...mation regarding hazardous or unsafe practices of the machine Levels of hazards are identified that could result in product damage personal injury or severe injury resulting in death The OPERATIONS section is to familiarize the operator with the operation and function of the machine The MAINTENANCE section contains preventive main tenance to keep the machine and its components in good working cond...

Page 5: ...on pressure The maximum weight the trailer is designed to carry Gross vehicle weight rating of the trailer Gross axle weight rating of the trailer Understanding Tire Pressure and Load Limits Tire inflation pressure is the level of air in the tire that provides it with the load carrying capacity and affects the overall performance of the trailer The tire inflation pressure is a number that indicate...

Page 6: ...ndition Wheel lugs Bearing lube and tightness Hitch Safety chains 12V running lights Distribution and security Caster up in travel position Check lug nuts for tightness before initial trip at 10 miles 25 miles and 50 miles Recheck every 3 months or 3000 miles NOTE Checking all of the above steps before every trip is key for safety IMPORTANT The load must be distributed equally on the bed of the tr...

Page 7: ... coupler failure Variable Height Bracket Coupler operation must not be impaired in any way Do not use if coupler operation is impaired Bolting Instructions Align holes in coupler and mounting bracket NOTE Coupler must be secured to mounting bracket using two sets of holes in the mounting bracket Insert two 2 5 8 x4 5 grade 5 bolts through desired mounting bracket holes and coupler For each bolt Pl...

Page 8: ...upler Ball Engagement If the coupler and towing ball resist attempts to make engagement do not force latch assembly Instead check the ball diameter to verify that it conforms to Society of Automotive Engineers SAE specifications Standard two inch diameter ball should be within the limits of 2 000 inches to 1 970 inches Balls larger than 2 000 inches will not readily fit the coupler A two piece cou...

Page 9: ...tifica tion Number tag It will show the GVWR Gross Vehicle Weight Rating which is the maximum load that can be applied to the tires on the trailer The GVWR and the carrying capacity of the trailer are based on the tire size installed on the trailer The GVWR is the maximum carrying capacity of the trailer with its respective tires It may not necessarily equal the total GVWR of the trailer less the ...

Page 10: ...nd on the trailer itself It can very easily lead to an accident To adjust for too light of a tongue weight the load must be shifted for ward with respect to the axle This will increase the weight that is transferred to the tongue Adjustments should be made until the tongue weight falls within 10 15 recommended range Likewise if you have too much tongue weight adjust the weight backwards with respe...

Page 11: ...d in the coupler Tires Before mounting tires onto wheels make certain that the rim size and contour is approved for the tire as shown in the Tire and Rim Association Yearbook or the tire manufacturer s catalog Also make sure the tire will carry the rated load If the load is not equal on all tires due to trailer weight distribution use the tire rated for the heaviest wheel position Note The capacit...

Page 12: ...vehicle pull the safety pin on the breakaway switch Check to see if system is operational Push safety pin back in to its original position Check battery fluid level every 60 90 days Remove cover There are two fill caps Refill with distilled water only KÄRCHER TRAILER OPERATORS MANUAL 9 807 794 0 B ...

Page 13: ...onnecting trailer from tow vehicle make sure to replace safety pin Brakes Your trailer is equipped with electric brakes Complete service and repair information for the electric brakes is found in the Axle Break Service Manual that is furnished with your trailer Note It is important to strictly adhere to the axle break instructions for brake service and repair In this way you are protecting the val...

Page 14: ...d 6 Repeat above procedure on all brakes Never crawl under your trailer unless it is resting on properly placed jack stands Do not lift or place supports on any part of the suspension system Brake Cleaning Inspection Your trailer brakes must be inspected and serviced at yearly intervals or more often as use and performance require Magnets and shoes must be changed when they become worn or scored t...

Page 15: ...n Procedures Before removing trailer from jack stands 1 Remove all wheels and hubs or brake drums Note which spindle and brake that the drum was removed from so that it can be reinstalled in the same location 2 Inspect suspension for wear 3 Check tightness of hanger bolt shackle bolt and U bolt nuts per recommended torque values 4 Check brake linings brake drums and armature faces for excessive we...

Page 16: ...Important Safety Information WARNING To reduce the risk of injury read operating instructions carefully before using 1 Read the owner s manual thor oughly Failure to follow instruc tions could cause malfunction of the machine and result in death serious bodily injury and or property damage 2 Know how to stop the machine and bleed pressure quickly Be thoroughly familiar with the controls 3 Stay ale...

Page 17: ... worn 10 Always wear properly rated eye protection such as safety goggles or face shield while spraying Safety glasses do not provide full protection WARNING This machine exceeds 85 dB Appropriate ear protection must be worn WARNING Hot discharge fluid Do not touch or direct discharge stream at persons WARNING This machine produces hot water and must have insulated components attached to protect t...

Page 18: ... and no hotter then 90 F WARNING Risk of asphyxiation Use this product only in a well ventilated area 16 Avoid operating machines in small areas or near exhaust fans Adequate oxygen is needed for combustion or dangerous carbon monoxide will result 17 Manufacturer will not be liable for any changes made to our standard machines or any compo nents not purchased from us 18 The best insurance against ...

Page 19: ...and if it finds that a safety defect exists in a group of vehicles it may order a recall and remedy campaign However NHTSA cannot become involved in individual problems between you your local dealer To contact NHTSA you may either call the Auto Safety Hotline toll free at 1 888 327 4236 TTY 1 800 424 9153 or write to NHTSA U S Department of Transportation 1200 New Jersey Avenue SE Washington DC 20...

Page 20: ...faulty Check and replace if necessary BURNER WILL NOT LIGHT Little or no fuel Fill tank with fuel Improper fuel or water in fuel Drain fuel tank and fill with proper fuel Clogged fuel line Clean or replace Plugged fuel filter Replace as needed Mis adjusted burner air bands Readjust air bands for clean burn Little or no fuel pressure from fuel pump Increase fuel pressure to specification and or rep...

Page 21: ...r bands on burner assembly Fuel pressure is low 140 psi for burner Adjust fuel pump pressure to specifications Burner nozzle is plugged or dirty Replace nozzle Check parts breakdown for nozzle size Burner nozzle spray pattern is faulty Replace nozzle Check parts breakdown for nozzle size Heavy accumulation of soot on coils and burner assembly Remove coils and burner assembly clean thoroughly or Ca...

Page 22: ...IL Oil seal worn Check and replace if necessary High humidity in air Check and change oil twice as often WATER DRIPPING FROM UNDER PUMP Piston packing worn Check and replace if necessary O Ring plunger retainer worn Check and replace if necessary Cracked piston Check and replace if necessary Pump protector Lower water supply pressure Do not run with spray gun closed longer than 2 minutes OIL DRIPP...

Page 23: ...lve seat faulty Check and replace if necessary Worn piston packing Check and replace if necessary BURNER MOTOR WILL NOT RUN Fuel pump seized Replace fuel pump Burner fan loose or misaligned Position correctly tighten set screw Defective control switch Replace switch Loose wire Check and replace or tighten wiring Defective burner motor Replace motor RELIEF VALVE LEAKS WATER Relief valve defective R...

Page 24: ...ct Daily Change Every 25 hours Filter Every 50 hours Air Cleaner Inspect Every 50 hours or monthly Clean Every 3 months Battery Level Check monthly Engine Fuel Filter 500 hours or 6 months Spark Plug Maintenance 500 hours or 6 months Clean Fuel Tank s Annually Replace Fuel Lines Annually Pump Oil Non detergent SAE 10W 40 Inspect Oil level daily Change After first 50 hours then every 500 hours or a...

Page 25: ... 3000 mi or 3 mos Wheel Check for damage and or out of round Every 6000 mi or 6 mos Coupler Ball Check for sufficient lube Check lock mechanism Check for unusual wear Every trip Safety Chains at Hitch Ball Check for abrasion distortion and general integrity of links Every trip Coupler Check for proper fastening hitch pin in position and secure Every trip Brakes Check for proper adjustment operatio...

Page 26: ...9 807 794 0 Printed in U S A ...

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