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Dillon Precision RL 550B Instruction Manual

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Page 1

RL 550B
Instruction Manual
Version 7.8
illon
recision
Products, Inc.
Manufacturers of 
The Worlds Finest
Loading Equipment 

Page 2

RL 550B Parts List
Part # Description
13149 Manual
13409 Crank
13573 Machine Box
13583 Link Arm, Left
13644 Powder Bar Spacer
13650 Spent Primer Cup
13673 Primer Magazine, Red, Large
13691 Powder Measure Tube
13700 Link Arm Pin
13704 Handle Washer
13707 Follower Rod
13719 Cartridge Spring Retainer Screw
13720 Index Sprocket
13734 Parts Box 
13747 Link Arm, Right w/Hook
13757 Primer Seating Punch, Small
13765 Roller
13775 Main Shaft
13781 Shellplate Platform
13789 1/4-2/8 Set Screw
13793 Roller
13794...

Page 3

14040
20059 13673 13707
13794
13720
20093
13966
13925
14015
13881
14025
13928
14014 13923
1374713650
13775
13890
13409 13700 13789
13830
13890 13583
13841 1380313839 1383420094 13909 14067
13841
20636
Assembly 13781
13885
1400813891
13997
1393020302
See page 5 for
more detail.
14280See page 5 for
more detail. See page 4 for
more detail.
See page 5 for
more detail.
13801 97000
18086
14033
13799
3
RL 550B Schematic
17085 (large)
or 
17086 (small) 

Page 4

13882
22273
13691
13793
14808
13940
13845
13871
97034
14041
13904
13939
14037
18086
14033
13801
13799
14067
20064
*13782 *13426
16340
14202
97000
13848
13893
20062
21353
20063
13426 * Powder Funnel, .45 cal Pistol
13644 Powder Bar Spacer
13691 Powder Measure Tube Only
13782 * Powder Funnel, .22 cal Rifle
13793 Roller
13845 Collar Sleeve
13848 Bellcrank Bushing
13871 Bellcrank Cube
13882 Powder Measure Lid
13893 Powder Bar Post, Large
13904 Bellcrank Screw
13921 Plastic Plug
13939 Body Collar Clamp
13940...

Page 5

13757 Primer Seating Punch, Small
13824 Primer Seating Cup, Large
13825 Primer Seating Cup, Small
13869 Operating Rod
13887 Operating Rod Bracket
13889 Large Roller
13898 Primer Slide Stop Nut
13917 Roller Clip
13919 Roller Pin
13920 Primer Slide
13924 Primer Slide Return Spring Post
13957 Primer Shield Cap
13961 Slide Pickup Adjustment Screw
13964 Primer Feed Stop Spring Screw
13967 Primer Seating Punch, Large
13979 Primer Feed Stop Spring
13996 Primer Punch Set Screw
14003 Flexible Orifice Large (small...

Page 6

Introduction
First of all, the Dillon RL 550B is a remarkably simple
machine–a little care and thought while setting up will
save you time and give you thousands of trouble free
rounds.
Suggested Minimum Equipment:
1)  Loading Manual 2)  Powder Scale
3)  Safety Glasses 4)  Primer Flip Tray *
5)  Dial Caliper * (* Indicates items that are not
absolutely essential, but are pretty darned handy!)
Mounting the RL 550B to your bench.
Place your RL 550B on the edge of sturdy bench or table.
Give yourself about...

Page 7

• LOADS AND LENGTHS: Avoid maximum loads and
pressures at all times. Use only recommended loads from
manuals and information supplied by reliable component
manufacturers and suppliers. Since Dillon Precision has no
control over the components which may be used on their
equipment, no responsibility is implied or assumed for
results obtained through the use of any such components. 
Seat bullets as close to maximum cartridge length as
possible. Under some conditions, seating bullets
excessively deep can...

Page 8

Place the index sprocket on top of the shellplate
(making sure the locator posts go into the
corresponding holes in the shellplate, see Fig. 7).Next, insert the shellplate bolt through the
sprocket and plate and into the center hole of the
platform, Fig. 8. Tighten with the supplied Allen
wrench to the point where you are unable to turn the
sprocket by hand. Now, back off the bolt slightly,
allowing you to push the sprocket easily with your
thumb, Fig. 9. There should be no looseness or slop at
this...

Page 9

Take the brass tipped set screw (#13923) insert
and tighten securely in the tapped hole beneath the
platform on the left side of the main shaft, Fig. 10.
This will keep the shellplate from tightening as you
use the machine. This screw must be loosened when
changing calibers, something that is often forgotten
as it’s out of sight. 
In your caliber conversion box, you will find three
brass locator buttons. These simply drop into the three
remaining holes in the platform, Fig. 9. These
“buttons” hold the...

Page 10

The operating rod (#13869) must be installed
between the two white rollers before the operation of
the primer slide. Refer to Fig. 12for the proper
placement of the rod. Unscrew the knurled cap
(#13957) and remove the large primer magazine and
replace with the small primer magazine tube, Fig. 14;
the plastic tip should look like the one you just took
out. Replace the knurled cap. 
Wait until you’ve finished assembly before actually
placing primers in the magazine.
You will notice that the primer magazine...
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