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Operation & Maintenance Manual 

Sauber Mfg. Co.’s Model 1521-PRD Combination Trailer 

10/2021 

Page 1 

 

 

Contents 

Preface .................................................................................................................................................................................... 1 

Component Sourcing Information .......................................................................................................................................... 1 

Serious Hazards ....................................................................................................................................................................... 2 

Check Prior to Moving ............................................................................................................................................................. 3 

Check Prior to Towing ............................................................................................................................................................. 4 

Maintenance Reference .......................................................................................................................................................... 9 

Physical Dimensions and Component Detail ........................................................................................................................ 10 

Suggested Work Methods ........................................................................................................ 

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Owner / Operating Company Work Methods....................................................................................................................... 10 

 

Preface 

Thank you for choosing Sauber Mfg. Co. You have purchased a trailer designed and built with care. With minimal 
maintenance and by understanding its operation, your new trailer will provide you with years of excellent service. We 
welcome your suggestions for improvement and stand willing to assist you if any questions arise during its operation. If 
we can help in any way, please contact your account representative: 

 

Website: 

https://saubermfg.com/sauber-contact-about/

 

 

Phone: (630) 365-6600 

The following manual provides important safety information and instruction. Please read this manual before operating 
your new trailer. It is important to follow safety instructions and cautions. 

We acknowledge that not every situation or combination of tow vehicle and trailer can be addressed, therefore we ask 
that you use sound judgment after reading the following outlines. 

Some components may be produced by a third party. When available, separate service manuals and instructions may 
apply. 

Component Sourcing Information 

Our equipment is designed and built with operators and maintenance personnel in mind. To this end, non-rusting 
hardware and bolt-on / bolt-off componentry is used at every possible opportunity. This encourages routine 
maintenance by making the work easier on the technician, as well as on the equipment. Sauber Mfg. Co. will have most 
of the components that might need replacement in stock at our facility, and we are always ready to help get you any 
replacement parts you might need. 

Summary of Contents for 1521-PRD

Page 1: ...contact about Phone 630 365 6600 The following manual provides important safety information and instruction Please read this manual before operating your new trailer It is important to follow safety instructions and cautions We acknowledge that not every situation or combination of tow vehicle and trailer can be addressed therefore we ask that you use sound judgment after reading the following out...

Page 2: ...and tow vehicle are rated for the Gross Vehicle Weight Rating GVWR and tongue weight of your trailer OVERLOADING AND OR IMPROPER WEIGHT DISTRIBUTION The total weight of the load you put in or on the trailer plus the empty weight of the trailer itself must not exceed the trailer s Gross Vehicle Weight Rating GVWR If you do not know the empty weight of the trailer plus the cargo weight you must weig...

Page 3: ...tch and that the safety chains and emergency breakaway cable electric brakes and air hoses air brakes are correctly attached Uncoupling of the trailer during transit can lead to a serious accident or a fatality Ensure that the pintle hook capacity rating including installation is sufficient for the GVWR and the tongue weight of the trailer being towed Make sure that the pintle hook is physically c...

Page 4: ...sembled When driving a new trailer or after wheels have be remounted check to make sure they are tight after the first 10 25 and 50 miles of use and before each tow thereafter Our wheel nuts are torqued to manufacturer specifications and are then fitted with high visibility wheel nut indicators The indicators are fitted in a uniform pattern so when a wheel nut has loosened the indicator will becom...

Page 5: ...g vehicle hitch cross the safety chains and connect them to the rings provided at the towing vehicle bumper Insert the electrical connection cord and check trailer lighting Connect the air glad hands if present and check brake operation Ensure the trailer axle s do not exceed their GAWR and the entire trailer and load does not exceed the GVWR rating Grounding Your trailer may be equipped with a br...

Page 6: ...erves as a guide in recommending what size poles should be carried in various positions It is always assumed that the pole will be carried with the butt end heavy end towards the front and that the pole front will be within 1 of the hitch front The calculations below assume 20 total weight transfer to the trailer tongue and are based on standard minimum butt and top circumference measurements for ...

Page 7: ... trailer and extension A second option is relocating the undercarriage rearward a maximum of 2 The third option simply lowers the target tongue weight If 10 or 15 tongue weight transfer is desired substitute 1 10 or 1 15 respectively for 1 20 in the equation Tongue weight is an important consideration Too much can raise rear truck axle weights to unacceptable levels and de load the front axle caus...

Page 8: ... and has an 8 quart hydraulic reservoir The 2 Button tethered remote is labeled UP and DOWN and controls the elevation and lower of the bed Although the unit is equipped with a relief valve avoid running the unit over relief Doing so will reduce hydraulic component life and put unnecessary stress on mechanical components The Class D 40 Hoist includes an integrated prop which should be used wheneve...

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Page 10: ...nsion Monthly Check Oil Bath Level in Axle Hubs Monthly Inspect Any Hydraulic Hoses and Connections Monthly Check Pintle Eye Wear Annually Owner Operating Company Work Methods This section is provisional space for work methods that would be specific to the owning or operating company Incorporating the company specific work methods here may provide for more thorough adherence to safety procedures p...

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