Scouterhorn

20160712

[Photos 1A through 4B] On 2016-07-11, the tower operators helping Patriot District were lowering the Scouterhorn and observed a large pool of hydraulic oil under the tower. Discussions with the product manager from Spectrum Sportsled to the hypothesis that if the voltage to the pump was low, the coil controlling the flow control may have stuck. Oil may have not been returning to the top of the tower resulting in the oil from the bottom of the pistons filling the reservoir. We depressed the starboard side of the flow control. Vibration of the port side pipes suggest oil was being pushed into the tops of the pistons. Key for the future operations; always ensure a strong current to the motor; at least 12 volts.
[Photos 4C through 7B] On 2016-07-16, White Oak District operated the Scouterhorn in support of the 2016 DARCARS Rockville Rotary Twilight Runfest at the Cabin John Mall and Shopping Center, Potomac, MD. Prior to being inspected, we checked the auto-belays and found a discrepancy with one. I neglected to photograph the oil-sights. Before erecting the tower, the oil-sight for AB#1 (from the rear of the trailer looking to the tongue, numbering left to right) was blueish and the other 3 were clear. When erected, all oil-sights were uniform blueish.

	A	B	C
1	Top of Argo/Hytos pump; flow regulators with knurled volume controls, electricity to coil that moves the flow control. Pipes on left feed tops of the lift piston. Pipes on right feed bottoms of lift pistons. 2016-07-12 04:51 PM 1851 KB	Starboard side of pump. Reservoir filled to ¾ full with ISO 32 (AW 32) hydraulic fluid. Available at Home Depot. Stored by chainsaws (used for pressure washers, etc.) Pipes feed oil to bottom of pistons. 2016-07-12 04:52 PM 1637 KB	Port side of pump. Pipes feed oil to top of pistons. 2016-07-12 04:52 PM 2034 KB
2	Top of flow control. Top of reservoir with air-breather holes. 2016-07-15 10:44 PM 1683 KB	Top of Argo/Hytos pump; flow regulators with knurled volume controls, electricity to coil that moves the flow control. Pipes on left feed tops of the lift piston. Pipes on right feed bottoms of lift pistons. 2016-07-12 04:52 PM 1617 KB	Pump and pipes. Left side (port) pipes feed top of pistons (lowering the tower). Right side (starboard) feed bottom of pistons (raise the tower). 2016-07-12 04:52 PM 2124 KB
3	Top of pump. 2016-07-15 10:46 PM 1649 KB	Close up of flow control. 2016-07-15 10:46 PM 1419 KB	Two gallons of hydraulic oil. 2016-07-12 04:04 PM 2234 KB
4	Indication of port. Depressing center of flow control allows oil to flow to top of pistons. 2016-07-15 10:52 PM 157 KB	Indication of port in starboard side. Depressing center of flow control allows oil to flow out of bottom of pistons, allowing tower to come down. Push lightly because flow can be quick. 2016-07-15 10:53 PM 142 KB	[From back of trailer to front, with #1 auto-belay (AB) on left and #4 on right] Left underside edge of AB tank; notice oil drip stops under horizontal resting position (maximum extension) of the pulley cart. Notice no indication oil has dripped from the pulley cart. This may indicate this is the distal end oil stream that began toward the end of the tank closer to the rear of the trailer. 2016-07-16 01:52 PM 1687 KB
5	Underside left edge of the AB tank midway toward rear of the trailer. 2016-07-16 01:52 PM 1919 KB	Underside left edge of the AB tank midway toward rear of the trailer at the cross-trailer support bar. Notice the film on the left side of the AB tank (above the support bar). Notice the valve/filler port(?) is directly above the film. 2016-07-16 01:52 PM 2001 KB	Under the support bar, looking up. #1 AB is just to the left. 2016-07-16 01:52 PM 1520 KB
6	Under the support bar, looking up at AB #2 (right most) to #4 (left most). 2016-07-16 01:52 PM 1602 KB	Level with the pistons (2 per AB), AB #1 is in the foreground. 2016-07-16 01:53 PM 1487 KB	Slightly above AB#1. Notice oil on the cap. [From top of cap] Cap turned clockwise with approximately the same moderate resistance as all other caps. Other caps may also have had some trace of oil. 2016-07-16 01:53 PM 1946 KB
7	[Believe true. Need to confirm.] Left side of AB tank #1, from above the air pressure gauge. 2016-07-16 01:53 PM 1811 KB	Right side of oil reservoir with mobile tower fully vertical and level. 2016-07-16 07:47 PM 1346 KB