Beginning in 1968, Pak-Mor launched an all-new line of rear loaders, called Load-Liner, which were once again the creation of Orin Anderson. With this new series, Pak-Mor became the third major manufacturer to utilize the twin-panel 'slide-sweep' method on a rear loader, following the Leach 2-R Packmaster (1959) and Load-Master LM100 (1964). By the end of the 1960's, it was probably becoming apparent to most everyone in the industry that the slide-sweep method represented the future of rear loader technology, and would make almost all previous designs obsolete.
Pak-Mor had evidently seen this trend, and the all new RL-300 series (with 3 cubic yard loading hopper) debuted just four years after the introduction of their rotary-sweep RL-15 Profit Maker series. The RL-200 (2 cubic yard hopper) followed shortly thereafter, giving Pak-Mor a full line up of rear loaders. The RL-15 became the entry-level model for residential & light duty. The RL-200/300 Load-Liners filled out the top slots respectively as the medium and heavy-duty bulk packers.
The RL-300 borrowed heavily from the Load-Master LM100, with external packer cylinders mounted on the hopper side walls. However, Pak-Mor used slide blocks to carry the slide panel (in lieu of the rollers used by Leach and Load-Master). The high-compaction RL-300 was a real brute, with massive 6" packing cylinders which exerted 65,000 lbs. of force, working at 1150 p.s.i. fluid pressure. An angled sweep panel gave the 300 a big bite, very similar to the Load-Master. Three bodies could be had; 20, 25 or 30 yards capacity.
The mid-range RL-200 featured a slightly smaller, two-plus yard hopper and a smaller 4" packer cylinders. Five bodies were available for the 200 series, in 14-16-18-20-25 cubic yard capacities (a 30 yarder would eventually be offered in the future). This version would go on to become one of Pak-Mor's most popular models over the years, a favorite of municipalities and contractors alike, with rated hopper capacity eventually reaching 2.8 cubic yards. The RL-200 also and had another interesting feature;
By removing a few fasteners, the upper tailgate section could be raised hydraulically to allow easy access to all major panel and hydraulic components. The RL-200 packer cylinders were located below the plane of the blade track, and the tailgate lift cylinders were also repositioned to facilitate this service feature. This was a Pak-Mor exclusive, not offered by any other U.S. manufacturer.
Load-Liners could be fitted with either kick-bar or line-pull container hoists
Load-Liners mounted the ejector ram at an angle from the upper front end of the body. This allowed for a single-stage ram to be used in bodies of 20 cubic yards or less. This greatly reduces initial unit cost, as well as maintenance expenses over the life of the packer.
Big '76 RL-325 discharging load at the landfill
Later model R220 from 1982, still has rounded lines on tailgate. The back ends of all Pak-Mor rear loaders were squared off during the 1980's
Here's video of a classic 1978 Pak-Mor RL-330, still on the job in Providence, Rhode Island. This outstanding video was made available courtesy of gtpmike2000 who filmed it in 2007
100 Series Load-Liner
Beginning in 1976, the original Pak-Mor rotary-blade RL-15 series rear loaders were discontinued, and replaced by the Load-Liner 100 series. This new model was essentially a scaled down version of the larger Load-Liners, and become the entry-level, light duty rear loader of the product line. The smallest model was initially a 14 yarder, but the 100 series has at times been offered with any size Pak-Mor rear loader body, right up to the big 30 yard box.
The 100/200/300 series continues to this day, though gradually they became known as simply the "R" series instead of "RL". During the 1980's, different combinations of letters would often follow the "R" to denote model variations, such as "RHC200" for a high-compaction version of the 200 series.
