70A Bucket Loader Hydraulics

[dklock]

I am replacing hydraulic lines on my 70a bucket loader. From the top looking down at the lines on the loader (A,B,C,D) something I didn't notice before ... inside two of the line receivers (for lack of a better term ... where you screw the lines from the tractor to the loader) had small metal pieces inside with small holes in them. Do all the lines have these and I inadvertently dropped them when removing the lines? How are these metal pieces oriented? They have a smooth side and a side that has raised edges. If all the lines don't have them, what lines do (A, B, C, or D). Also ... one of my two pieces has a slightly larger hole than the other. Based on how these pieces look I'd guess that the flat side faces out and interfaces with the end of the line being attached. But I don't know if there were 4 (one for each line) and if not what one goes on what line!

Bummed I didn't pay more careful attention when disassembling this!!!

 

[kennyd]

They are generally only on the lines that allow the loader to lower, so it does not fall fast. See part #11:


HYDRAULIC HOSES AND LINES
Cart key PART NO. PART NAME QTY SERIAL NO. 60 70 70A REMARKS
1 M78720 Hose Guard 1 305 MM (12"), HOSE
2 M78720 Hose Guard 1 X 838 MM (33"), HOSE
M78720 Hose Guard 1 X X 1069 MM (42"), HOSE
3 AW28955 Hydraulic Hose - Fabricate 4 X (A) (SUB FOR AM106599)
AW28957 Hydraulic Hose 4 X X (A) (SUB FOR AM106600)
4 AW28959 Oil Line 2 X LONG, (SUB FOR AM106607)
AW28961 Oil Line 2 X X LONG, (SUB FOR AM106609)
5 AW28958 Oil Line 2 X SHORT, (SUB FOR AM106606)
AW28960 Oil Line 2 X X SHORT, (SUB FOR AM106608)
6 AW28951 Hydraulic Hose 2 (A) (SUB FOR AM106595)
Cart key PART NO. PART NAME QTY SERIAL NO. 60 70 70A REMARKS
7 AW28953 Hydraulic Hose 2 (A) (SUB FOR AM106601)
8 AW28954 Hydraulic Hose - Fabricate 2 X (A) (SUB FOR AM106602)
AW28956 Hydraulic Hose 2 X X (A) (SUB FOR AM106603)
9 AW28952 Hydraulic Hose 2 (A) (SUB FOR AM106594)
10 H77698 Tie Band 3
11 PT13365 Restrictor 2 X X .094", ORIFICE
M93627 Restrictor 1 X (B) .060", ORIFICE
PT13365 Restrictor 1 X
12 AM106200 Kit 1 RING (CONTAINS 4 COLOR CODED RINGS; 1 EA. SILVER, YELLOW, BLACK AND GREEN)
13 AM102420 Hydr. Quick Coupler Plug 4 MALE
Cart key PART NO. PART NAME QTY SERIAL NO. 60 70 70A REMARKS
14 M70728 Cap 4
15 T77613 O-Ring AR 9.2 MM (.364")
16 T77857 O-Ring AR 12.4 MM (.489")
(A) INCLUDES O-RINGS

(B) REPLACES (1) PT13365, .094 RESTRICTOR (GREEN LINE) ON 60 LOADER WHEN USED ON 670 TRACTOR.

 

[estim8rjackie]

I just ran into the same problem wondering which way they go since 1 side is smooth. I figured out which 2 lines they came from just not sure if it matters which way they go back in.